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<!-- Creation date: 2012-11-06T02:48:41Z --> |
<!-- Copyright (c) 2005-2012 R.R. Donnelley & Sons Company All Rights Reserved. --> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassAMember" xlink:label="us-gaap_CommonClassAMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="us-gaap_DefinedContributionPlanCostRecognized"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DefinedContributionPlanEmployerMatchingContributionInEmployerShares" xlink:label="idt_DefinedContributionPlanEmployerMatchingContributionInEmployerShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DistributionToNoncontrollingInterests" xlink:label="idt_DistributionToNoncontrollingInterests"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DividendsDeclared" xlink:label="idt_DividendsDeclared"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ExchangeOfClassBCommonStockTreasurySharesForCommonStock" xlink:label="idt_ExchangeOfClassBCommonStockTreasurySharesForCommonStock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ExchangeOfClassBCommonStockTreasurySharesForCommonStockShares" xlink:label="idt_ExchangeOfClassBCommonStockTreasurySharesForCommonStockShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IDTCorpMember" xlink:label="idt_IDTCorpMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="us-gaap_NoncontrollingInterestMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherNoncontrollingInterestIncrease" xlink:label="idt_OtherNoncontrollingInterestIncrease"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ReceivablesFromStockholderMember" xlink:label="us-gaap_ReceivablesFromStockholderMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RepurchaseOfCommonStockFromRelatedParty" xlink:label="idt_RepurchaseOfCommonStockFromRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RepurchaseOfCommonStockUnderStockRepurchaseProgram" xlink:label="idt_RepurchaseOfCommonStockUnderStockRepurchaseProgram"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RepurchaseOfRestrictedStock" xlink:label="idt_RepurchaseOfRestrictedStock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RestrictedStockIssuedToEmployeesAndDirectors" xlink:label="idt_RestrictedStockIssuedToEmployeesAndDirectors"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RestrictedStockIssuedToEmployeesAndDirectorsShares" xlink:label="idt_RestrictedStockIssuedToEmployeesAndDirectorsShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SharesExchangeBetweenSubsidiaries" xlink:label="idt_SharesExchangeBetweenSubsidiaries"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharesIssued" xlink:label="us-gaap_SharesIssued"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SpinOffOfBusiness" xlink:label="idt_SpinOffOfBusiness"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StockBasedCompensation" xlink:label="idt_StockBasedCompensation"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StockIssuedDuringPeriodSharesStockOptionExercised" xlink:label="idt_StockIssuedDuringPeriodSharesStockOptionExercised"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StockIssuedDuringPeriodValueNewIssuesOfSubsidiary" xlink:label="idt_StockIssuedDuringPeriodValueNewIssuesOfSubsidiary"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="us-gaap_TreasuryStockMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonStockMember" order="1.3200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassAMember" order="1.3300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassBMember" order="1.3400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_IDTCorpMember" order="1.0100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AdditionalPaidInCapitalMember" order="1.2600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_TreasuryStockMember" order="1.2700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember" order="1.2800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="idt_AccumulatedDeficitMember" order="1.2900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_NoncontrollingInterestMember" order="1.3000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_ReceivablesFromStockholderMember" order="1.3100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesTable" xlink:label="idt_AccountingPoliciesTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdvertisingExpense" xlink:label="us-gaap_AdvertisingExpense"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BuildingMember" xlink:label="us-gaap_BuildingMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalizedComputerSoftwareAmortization" xlink:label="us-gaap_CapitalizedComputerSoftwareAmortization"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ComputerSoftwareMember" xlink:label="idt_ComputerSoftwareMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostMethodInvestments" xlink:label="us-gaap_CostMethodInvestments"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CustomerDepositsMember" xlink:label="idt_CustomerDepositsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CustomerListsMember" xlink:label="us-gaap_CustomerListsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EquipmentMember" xlink:label="us-gaap_EquipmentMember"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="us-gaap_FairValueByAssetClassAxis"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="us-gaap_FurnitureAndFixturesMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IncomeTaxesPayableMember" xlink:label="idt_IncomeTaxesPayableMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_NonCompeteAgreementMember" xlink:label="idt_NonCompeteAgreementMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="us-gaap_OtherAssetsMember"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TradeAccountsPayableAccruedExpensesOtherCurrentLiabilitiesAndOtherLiabilitiesMember" xlink:label="idt_TradeAccountsPayableAccruedExpensesOtherCurrentLiabilitiesAndOtherLiabilitiesMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TrademarksMember" xlink:label="us-gaap_TrademarksMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_UniversalServiceFundChargesBilledToCustomersReportedGross" xlink:label="idt_UniversalServiceFundChargesBilledToCustomersReportedGross"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="idt_AccountingPoliciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="us-gaap_EquityMethodInvestments" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="us-gaap_CostMethodInvestments" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="us-gaap_PriorPeriodReclassificationAdjustment" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="us-gaap_FairValueByAssetClassAxis" order="4.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="us-gaap_RangeAxis" order="5.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_CashAndCashEquivalentsMember" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" order="1.2100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_OtherAssetsMember" order="1.2400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="idt_IncomeTaxesPayableMember" order="1.2700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="idt_CustomerDepositsMember" order="1.2900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="idt_TradeAccountsPayableAccruedExpensesOtherCurrentLiabilitiesAndOtherLiabilitiesMember" order="1.3000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_FairValueByAssetClassAxis" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_FairValueByAssetClassAxis" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerListsMember" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_TrademarksMember" order="1.2300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="idt_NonCompeteAgreementMember" order="1.2600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_PropertyPlantAndEquipmentEstimatedUsefulLivesMinimum" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_PropertyPlantAndEquipmentEstimatedUsefulLivesMaximum" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_FiniteLivedIntangibleAssetsAmortizationPeriod" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="us-gaap_AdvertisingExpense" order="1.1000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="us-gaap_CapitalizedComputerSoftwareAmortization" order="1.1100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="us-gaap_CapitalizedComputerSoftwareNet" order="1.1200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_UniversalServiceFundChargesBilledToCustomersReportedGross" order="1.1300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_PercentageOfConsolidatedRevenuesNotExceededByAnySingleCustomer" order="1.1400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_FiveLargestCustomersPercentageOfConsolidatedRevenues" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PriorPeriodReclassificationAdjustment" xlink:to="idt_FiveLargestReceivableBalancesPercentageOfConsolidatedGrossAccountsReceivable" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_EquipmentMember" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_BuildingMember" order="1.2200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="idt_ComputerSoftwareMember" order="1.2500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_FurnitureAndFixturesMember" order="1.2800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeMember" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_MaximumMember" order="1.2000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfWeightedAverageNumberOfSharesUsedInCalculationOfBasicAndDilutedEarningsPerShare"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesLineItems" xlink:label="idt_AccountingPoliciesLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesTable" xlink:label="idt_AccountingPoliciesTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DilutiveSecuritiesNameDomain" xlink:label="idt_DilutiveSecuritiesNameDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DilutiveSecuritiesNameDomain" xlink:label="idt_DilutiveSecuritiesNameDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DilutiveSecuritiesStockOptionsShares" xlink:label="idt_DilutiveSecuritiesStockOptionsShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EffectOfDilutiveSecuritiesOnEarningsPerShareByTypeOfAwardAxis" xlink:label="idt_EffectOfDilutiveSecuritiesOnEarningsPerShareByTypeOfAwardAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_NonVestedRestrictedStockMember" xlink:label="idt_NonVestedRestrictedStockMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_NumberOfDilutiveSecuritiesStock" xlink:label="idt_NumberOfDilutiveSecuritiesStock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="idt_AccountingPoliciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="idt_DilutiveSecuritiesStockOptionsShares" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="idt_NumberOfDilutiveSecuritiesStock" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_AccountingPoliciesLineItems" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="idt_EffectOfDilutiveSecuritiesOnEarningsPerShareByTypeOfAwardAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassBMember" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_DilutiveSecuritiesNameDomain" xlink:to="idt_NonVestedRestrictedStockMember" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="idt_EffectOfDilutiveSecuritiesOnEarningsPerShareByTypeOfAwardAxis" xlink:to="idt_DilutiveSecuritiesNameDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="idt_EffectOfDilutiveSecuritiesOnEarningsPerShareByTypeOfAwardAxis" xlink:to="idt_DilutiveSecuritiesNameDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="1.0000" priority="2" use="optional"/> |
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| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfOutstandingStockOptionsExcludedFromCalculationOfDilutedEarningsPerShare"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesTable" xlink:label="idt_AccountingPoliciesTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_AccountingPoliciesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="idt_AccountingPoliciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureDescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesSummaryOfChangeInAllowanceForDoubtfulAccounts"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesLineItems" xlink:label="idt_AccountingPoliciesLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AccountingPoliciesTable" xlink:label="idt_AccountingPoliciesTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableChargeOffs" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableChargeOffs"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DisposalGroupIncludingDiscontinuedOperationRestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="idt_DisposalGroupIncludingDiscontinuedOperationRestrictedCashAndCashEquivalentsAtCarryingValue"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DisposalGroupIncludingDiscontinuedOperationsPrepaidExpenses" xlink:label="idt_DisposalGroupIncludingDiscontinuedOperationsPrepaidExpenses"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:to="idt_GenieAndSubsidiariesMember" order="1.0200" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherExpenseIncomeNetMember" xlink:label="idt_OtherExpenseIncomeNetMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="idt_AssetsAtFairValueMember" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="us-gaap_BalanceSheetLocationAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="us-gaap_IncomeStatementLocationAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="idt_OtherExpenseIncomeNetMember" order="1.1000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipment"> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalizedComputerSoftwareGross" xlink:label="us-gaap_CapitalizedComputerSoftwareGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EquipmentGross" xlink:label="idt_EquipmentGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FurnitureAndFixturesGross" xlink:label="us-gaap_FurnitureAndFixturesGross"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LandAndBuildingsGross" xlink:label="idt_LandAndBuildingsGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LeaseholdImprovementsGross" xlink:label="us-gaap_LeaseholdImprovementsGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_EquipmentGross" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_LandAndBuildingsGross" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_CapitalizedComputerSoftwareGross" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_LeaseholdImprovementsGross" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_FurnitureAndFixturesGross" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentGross" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformation"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CapitalLeasedAssetsAccumulatedDepreciation" xlink:label="idt_CapitalLeasedAssetsAccumulatedDepreciation"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasedAssetsGross" xlink:label="us-gaap_CapitalLeasedAssetsGross"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DepreciationAndAmortizationOfPropertyPlantAndEquipment" xlink:label="idt_DepreciationAndAmortizationOfPropertyPlantAndEquipment"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityByLocationAxis" xlink:label="dei_EntityByLocationAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EstimatedCarryingValueOfDamagedPortionOfBuildingAndImprovements" xlink:label="idt_EstimatedCarryingValueOfDamagedPortionOfBuildingAndImprovements"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossOnSaleOfAssets" xlink:label="idt_GainLossOnSaleOfAssets"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnInsuranceSettlement" xlink:label="idt_GainOnInsuranceSettlement"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentBuildingAndBuildingImprovements" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LocationDomain" xlink:label="dei_LocationDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LocationDomain" xlink:label="dei_LocationDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_MortgageLoansPayableNet" xlink:label="idt_MortgageLoansPayableNet"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PiscatawayMember" xlink:label="idt_PiscatawayMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PortionOfProceedsUsedToRepayMortgageLoan" xlink:label="idt_PortionOfProceedsUsedToRepayMortgageLoan"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ProceedsFromInsurancePolicies" xlink:label="idt_ProceedsFromInsurancePolicies"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ProceedsFromSaleOfBuildingAfterPaymentOfMortgageAndTransactionExpenses" xlink:label="idt_ProceedsFromSaleOfBuildingAfterPaymentOfMortgageAndTransactionExpenses"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfBuildings" xlink:label="us-gaap_ProceedsFromSaleOfBuildings"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SanJuanMember" xlink:label="idt_SanJuanMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="dei_EntityByLocationAxis" xlink:to="dei_LocationDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_EntityByLocationAxis" xlink:to="dei_LocationDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_LocationDomain" xlink:to="idt_SanJuanMember" order="1.1400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_LocationDomain" xlink:to="idt_PiscatawayMember" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_InvestmentBuildingAndBuildingImprovements" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_MortgageLoansPayableNet" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_ProceedsFromInsurancePolicies" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_EstimatedCarryingValueOfDamagedPortionOfBuildingAndImprovements" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_GainOnInsuranceSettlement" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_ProceedsFromSaleOfBuildings" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_ProceedsFromSaleOfBuildingAfterPaymentOfMortgageAndTransactionExpenses" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_PortionOfProceedsUsedToRepayMortgageLoan" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_GainLossOnSaleOfAssets" order="1.1000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_CapitalLeasedAssetsGross" order="1.1100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_CapitalLeasedAssetsAccumulatedDepreciation" order="1.1200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="idt_DepreciationAndAmortizationOfPropertyPlantAndEquipment" order="1.1300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="dei_EntityByLocationAxis" order="2.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesScheduleOfChangeInCarryingAmountOfGoodwillByOperatingSegment"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AllOtherMember" xlink:label="idt_AllOtherMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CountryAxis" xlink:label="idt_CountryAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CountryDomain" xlink:label="idt_CountryDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CountryDomain" xlink:label="idt_CountryDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillTranslationAdjustments" xlink:label="us-gaap_GoodwillTranslationAdjustments"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:label="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:label="idt_IntangibleAssetsGoodwillAndOtherAssetsTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TelecomPlatformServicesMember" xlink:label="idt_TelecomPlatformServicesMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="idt_CountryAxis" xlink:to="idt_CountryDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="idt_CountryAxis" xlink:to="idt_CountryDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CountryDomain" xlink:to="idt_TelecomPlatformServicesMember" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CountryDomain" xlink:to="idt_AllOtherMember" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="us-gaap_Goodwill" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="us-gaap_GoodwillTranslationAdjustments" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:to="idt_CountryAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesScheduleOfOtherIntangibleAssets"> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CustomerListsMember" xlink:label="us-gaap_CustomerListsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:label="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:label="idt_IntangibleAssetsGoodwillAndOtherAssetsTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OthersMember" xlink:label="idt_OthersMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TrademarksAndPatentsMember" xlink:label="idt_TrademarksAndPatentsMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_WeightedAverageAmortizationPeriod" xlink:label="idt_WeightedAverageAmortizationPeriod"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="idt_TrademarksAndPatentsMember" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerListsMember" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="idt_OthersMember" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="idt_WeightedAverageAmortizationPeriod" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsLineItems" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_IntangibleAssetsGoodwillAndOtherAssetsTable" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureGoodwillAndOtherIntangiblesAdditionalInformation"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AmortizationExpenseForIntangiblesAndOtherAssets" xlink:label="idt_AmortizationExpenseForIntangiblesAndOtherAssets"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:label="idt_GoodwillAndOtherIntangibleAssetsLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GoodwillAndOtherIntangibleAssetsTable" xlink:label="idt_GoodwillAndOtherIntangibleAssetsTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="idt_GoodwillAndOtherIntangibleAssetsTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="idt_AmortizationExpenseForIntangiblesAndOtherAssets" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_GoodwillAndOtherIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_GoodwillAndOtherIntangibleAssetsTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureOtherOperatingLossesGainsNetSummaryOfOtherOperatingLossesGainsNetByBusinessSegment"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ActualPaymentReceivedUnderThirdPartyBankruptcySettlement" xlink:label="idt_ActualPaymentReceivedUnderThirdPartyBankruptcySettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CashReceivedUponTerminationOfContract" xlink:label="idt_CashReceivedUponTerminationOfContract"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CorporateOtherIncomeLoss" xlink:label="idt_CorporateOtherIncomeLoss"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DamagesAwardedToPlaintiffFinalJudgment" xlink:label="idt_DamagesAwardedToPlaintiffFinalJudgment"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DamagesAwardedToPlaintiffPreJudgmentInterest" xlink:label="idt_DamagesAwardedToPlaintiffPreJudgmentInterest"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnContractTermination" xlink:label="us-gaap_GainLossOnContractTermination"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnDispositionOfIntangibleAssets" xlink:label="us-gaap_GainLossOnDispositionOfIntangibleAssets"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnDispositionOfProperty" xlink:label="us-gaap_GainLossOnDispositionOfProperty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossOnDispositionOfProperty1" xlink:label="idt_GainLossOnDispositionOfProperty1"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossOnDispositionOfSubsidiary" xlink:label="idt_GainLossOnDispositionOfSubsidiary"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossOnSaleOfWirelessSpectrum" xlink:label="idt_GainLossOnSaleOfWirelessSpectrum"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossRelatedToSettlement" xlink:label="idt_GainLossRelatedToSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnInsuranceSettlement" xlink:label="idt_GainOnInsuranceSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnInsuranceSettlement2" xlink:label="idt_GainOnInsuranceSettlement2"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnSettlement" xlink:label="idt_GainOnSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainsLossesRelatedToDisposition" xlink:label="idt_GainsLossesRelatedToDisposition"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalAndRelatedFeesRelatedToSettlementAgreement" xlink:label="idt_LegalAndRelatedFeesRelatedToSettlementAgreement"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalFeesIncurred" xlink:label="idt_LegalFeesIncurred"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss" xlink:label="idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss2" xlink:label="idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LossContingencySettlementAgreementDate" xlink:label="us-gaap_LossContingencySettlementAgreementDate"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_NetBookValueOfDamagedPropertyPlantAndEquipment" xlink:label="idt_NetBookValueOfDamagedPropertyPlantAndEquipment"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherOperatingLossGains" xlink:label="idt_OtherOperatingLossGains"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherOperatingLossIncomeNetLineItems" xlink:label="idt_OtherOperatingLossIncomeNetLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherOperatingLossIncomeNetTable" xlink:label="idt_OtherOperatingLossIncomeNetTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PatentLitigationExpense" xlink:label="idt_PatentLitigationExpense"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PaymentForSettlementOfLitigation" xlink:label="idt_PaymentForSettlementOfLitigation"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentOfSharesDisposedof" xlink:label="idt_PercentOfSharesDisposedof"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ProceedsFromInsuranceSettlement" xlink:label="idt_ProceedsFromInsuranceSettlement"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromLegalSettlements" xlink:label="us-gaap_ProceedsFromLegalSettlements"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfIntangibleAssets" xlink:label="us-gaap_ProceedsFromSaleOfIntangibleAssets"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RealizedGainsLossesAndOtherSettlements" xlink:label="idt_RealizedGainsLossesAndOtherSettlements"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_OtherOperatingLossIncomeNetLineItems" xlink:to="idt_OtherOperatingLossIncomeNetTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_OtherOperatingLossIncomeNetLineItems" xlink:to="idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss" order="1.0200" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_OtherOperatingLossIncomeNetTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_BasisPointsSpread" xlink:label="idt_BasisPointsSpread"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DebtInstrumentInterestAddedToPrincipalAmount" xlink:label="idt_DebtInstrumentInterestAddedToPrincipalAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DebtInstrumentInterestAddedToPrincipalSupercededAmount" xlink:label="idt_DebtInstrumentInterestAddedToPrincipalSupercededAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DebtInstrumentInterestPaymentRate" xlink:label="idt_DebtInstrumentInterestPaymentRate"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DebtInstrumentInterestRateNonPaymentPortion" xlink:label="idt_DebtInstrumentInterestRateNonPaymentPortion"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DebtInstrumentMaturitiesPeriod" xlink:label="idt_DebtInstrumentMaturitiesPeriod"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentPeriodicPayment" xlink:label="us-gaap_DebtInstrumentPeriodicPayment"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="us-gaap_DebtInstrumentTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_FirstInstallementMember" xlink:label="idt_FirstInstallementMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_InterestAtLIBORPlusBasisPoints" xlink:label="idt_InterestAtLIBORPlusBasisPoints"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_InvestmentsInAndAdvancesToAffiliates" xlink:label="idt_InvestmentsInAndAdvancesToAffiliates"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LineOfCreditClosingFees" xlink:label="idt_LineOfCreditClosingFees"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LineOfCreditCovenantMaximumAmountOfLoansAndAdvancesToAffiliatesOrSubsidiaries" xlink:label="idt_LineOfCreditCovenantMaximumAmountOfLoansAndAdvancesToAffiliatesOrSubsidiaries"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="us-gaap_LineOfCreditFacilityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LineOfCreditFacilityUnusedCapacityCommitmentsFeePercentage" xlink:label="idt_LineOfCreditFacilityUnusedCapacityCommitmentsFeePercentage"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="us-gaap_LongTermDebtCurrent"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="us-gaap_LongTermDebtNoncurrent"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:label="us-gaap_MortgageLoansOnRealEstateNumberOfLoans"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MortgageLoansOnRealEstatePeriodicPaymentTermsBalloonPaymentAmount" xlink:label="us-gaap_MortgageLoansOnRealEstatePeriodicPaymentTermsBalloonPaymentAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_MortgageLoansOnRealEstatePeriodicPaymentTermsSupercededBalloonPaymentAmount" xlink:label="idt_MortgageLoansOnRealEstatePeriodicPaymentTermsSupercededBalloonPaymentAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_NotesDueJuneTwoThousandTwelveMember" xlink:label="idt_NotesDueJuneTwoThousandTwelveMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentageOfOwnershipInterestsAcquired" xlink:label="idt_PercentageOfOwnershipInterestsAcquired"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PrimeRateBasisMember" xlink:label="idt_PrimeRateBasisMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfBuildings" xlink:label="us-gaap_ProceedsFromSaleOfBuildings"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="us-gaap_RepaymentsOfSecuredDebt"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SecuredDebt" xlink:label="us-gaap_SecuredDebt"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SecuredTermLoanDueAprilTwoThousandAndTwentyMember" xlink:label="idt_SecuredTermLoanDueAprilTwoThousandAndTwentyMember"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain_2" order="1.0000" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxesLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxesLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxesLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxesLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_IncomeTaxesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureEquityAdditionalInformation"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AdjustmentsToAdditionalPaidInCapitalAndTreasuryStockOther" xlink:label="idt_AdjustmentsToAdditionalPaidInCapitalAndTreasuryStockOther"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:label="us-gaap_ChiefExecutiveOfficerMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ClassaRestrictedCommonShareMember" xlink:label="idt_ClassaRestrictedCommonShareMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ClassATreasuryStockPeriodDecreaseIncrease" xlink:label="idt_ClassATreasuryStockPeriodDecreaseIncrease"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassAMember" xlink:label="us-gaap_CommonClassAMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ConversionOfClassACommonStockToClassBCommonStockShares" xlink:label="idt_ConversionOfClassACommonStockToClassBCommonStockShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ConversionOfExchangeableSharesIntoClassBCommonShares" xlink:label="idt_ConversionOfExchangeableSharesIntoClassBCommonShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ConversionOfExchangeableSharesIntoClassBCommonSharesAggregateSharesExchanged" xlink:label="idt_ConversionOfExchangeableSharesIntoClassBCommonSharesAggregateSharesExchanged"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DividendPaidInCash" xlink:label="idt_DividendPaidInCash"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DividendsPayableAmountPerShare" xlink:label="us-gaap_DividendsPayableAmountPerShare"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EquityLineItems" xlink:label="idt_EquityLineItems"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersAfterTransaction" xlink:label="idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersAfterTransaction"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersBeforeTransaction" xlink:label="idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersBeforeTransaction"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentageOfEquityInterestSold" xlink:label="idt_PercentageOfEquityInterestSold"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentageOfEquityInterestSold2" xlink:label="idt_PercentageOfEquityInterestSold2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock" xlink:label="us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RestrictedStockUnitsClassBMember" xlink:label="idt_RestrictedStockUnitsClassBMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ScheduleOfEquityTable" xlink:label="idt_ScheduleOfEquityTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" xlink:label="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StockRepurchaseSpecialAuthorizationNumberOfSharesAuthorizedToBeRepurchased" xlink:label="idt_StockRepurchaseSpecialAuthorizationNumberOfSharesAuthorizedToBeRepurchased"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="us-gaap_SubsequentEventMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SubsequentEventPeriodAxis" xlink:label="idt_SubsequentEventPeriodAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SubsequentEventPeriodDomain" xlink:label="idt_SubsequentEventPeriodDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SubsequentEventPeriodDomain" xlink:label="idt_SubsequentEventPeriodDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:label="us-gaap_TreasuryStockAcquiredAverageCostPerShare"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="us-gaap_TreasuryStockSharesAcquired"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassBMember" order="1.2300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonStockMember" order="1.2600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="idt_RestrictedStockUnitsClassBMember" order="1.2700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="idt_ClassaRestrictedCommonShareMember" order="1.2800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassAMember" order="1.2900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" xlink:to="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" xlink:to="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_EquityLineItems" xlink:to="idt_ScheduleOfEquityTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_ConversionOfExchangeableSharesIntoClassBCommonShares" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_ConversionOfClassACommonStockToClassBCommonStockShares" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_ClassATreasuryStockPeriodDecreaseIncrease" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_ConversionOfExchangeableSharesIntoClassBCommonSharesAggregateSharesExchanged" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_AdjustmentsToAdditionalPaidInCapitalAndTreasuryStockOther" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_CommonStockDividendsPerShareCashPaid" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_DividendPaidInCash" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_DividendsPayableAmountPerShare" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_StockRepurchaseProgramAuthorizedAmount" order="1.1000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_TreasuryStockValueAcquiredCostMethod" order="1.1100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_TreasuryStockSharesAcquired" order="1.1200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" order="1.1300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_StockRepurchaseSpecialAuthorizationNumberOfSharesAuthorizedToBeRepurchased" order="1.1400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_TreasuryStockAcquiredAverageCostPerShare" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_SaleOfStockConsiderationReceivedOnTransaction" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersBeforeTransaction" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_MinorityInterestOwnershipPercentageByNoncontrollingOwnersAfterTransaction" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_PercentageOfEquityInterestSold" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_ProceedsFromIssuanceOrSaleOfEquity" order="1.2000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="idt_PercentageOfEquityInterestSold2" order="1.2100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_EquityLineItems" xlink:to="us-gaap_ReceivableFromShareholdersOrAffiliatesForIssuanceOfCapitalStock" order="1.2200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_ScheduleOfEquityTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_ScheduleOfEquityTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_ScheduleOfEquityTable" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_ScheduleOfEquityTable" xlink:to="idt_SubsequentEventPeriodAxis" order="4.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="idt_SubsequentEventPeriodAxis" xlink:to="idt_SubsequentEventPeriodDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="idt_SubsequentEventPeriodAxis" xlink:to="idt_SubsequentEventPeriodDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_SubsequentEventPeriodDomain" xlink:to="us-gaap_SubsequentEventMember" order="1.2500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="us-gaap_ChiefExecutiveOfficerMember" order="1.2400" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureStockBasedCompensationAdditionalInformation"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CEOOfInnovativeCommunicationsTechnologiesIncMember" xlink:label="idt_CEOOfInnovativeCommunicationsTechnologiesIncMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ChangesToCommonStockSharesReservedForStockOptionIncentivePlan" xlink:label="idt_ChangesToCommonStockSharesReservedForStockOptionIncentivePlan"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ChangesToSharesAvailableForFutureGrants" xlink:label="idt_ChangesToSharesAvailableForFutureGrants"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="us-gaap_CommonClassBMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CommonStockSharesReservedForStockOptionIncentivePlan" xlink:label="idt_CommonStockSharesReservedForStockOptionIncentivePlan"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DecreaseInOutstandingStockOptionExercisePriceAfterSpinoff" xlink:label="idt_DecreaseInOutstandingStockOptionExercisePriceAfterSpinoff"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognized" xlink:label="idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognized"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IncreaseInEquityOwnershipInterestInWhollyOwnedSubsidiaryPercentage" xlink:label="idt_IncreaseInEquityOwnershipInterestInWhollyOwnedSubsidiaryPercentage"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_InnovativeCommunicationsTechnologiesIncMember" xlink:label="idt_InnovativeCommunicationsTechnologiesIncMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentageOfSubsidiaryEquityGrantedToEmployees" xlink:label="idt_PercentageOfSubsidiaryEquityGrantedToEmployees"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PercentageOfSubsidiaryEquityStockOptionGrantedToSubsidiaryOfficer" xlink:label="idt_PercentageOfSubsidiaryEquityStockOptionGrantedToSubsidiaryOfficer"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExchangedForNewOptionsShares" xlink:label="idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExchangedForNewOptionsShares"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExtendedForOneYearTerm" xlink:label="idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExtendedForOneYearTerm"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationArrangementCommonSharesEligibleForPurchaseRelatedToOptionsVestedAndExercisableNumber" xlink:label="idt_ShareBasedCompensationArrangementCommonSharesEligibleForPurchaseRelatedToOptionsVestedAndExercisableNumber"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationArrangementStockOptionInSubsidiarySharesNumber" xlink:label="idt_ShareBasedCompensationArrangementStockOptionInSubsidiarySharesNumber"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationExpense" xlink:label="idt_ShareBasedCompensationExpense"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SharesAvailableStockOptionIncentivePlanForFutureGrants" xlink:label="idt_SharesAvailableStockOptionIncentivePlanForFutureGrants"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonStockMember" order="1.2500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonClassBMember" order="1.2700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ChangesToCommonStockSharesReservedForStockOptionIncentivePlan" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ChangesToSharesAvailableForFutureGrants" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_CommonStockSharesReservedForStockOptionIncentivePlan" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_SharesAvailableStockOptionIncentivePlanForFutureGrants" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" order="1.0700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognized" order="1.0800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_EmployeeServiceShareBasedCompensationNonvestedStockOptionsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" order="1.0900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExchangedForNewOptionsShares" order="1.1000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ShareBasedCompensationExpense" order="1.1100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ShareBasedCompensationArrangementCommonSharesEligibleForPurchaseRelatedToOptionsVestedAndExercisableNumber" order="1.1200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_DecreaseInOutstandingStockOptionExercisePriceAfterSpinoff" order="1.1300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ShareBasedCompensationArrangementStockOptionInSubsidiarySharesNumber" order="1.1400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOldOptionsExtendedForOneYearTerm" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_PercentageOfSubsidiaryEquityStockOptionGrantedToSubsidiaryOfficer" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" order="1.2000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" order="1.2100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" order="1.2200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_IncreaseInEquityOwnershipInterestInWhollyOwnedSubsidiaryPercentage" order="1.2300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_PercentageOfSubsidiaryEquityGrantedToEmployees" order="1.2400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTitleOfIndividualAxis" xlink:to="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="idt_CEOOfInnovativeCommunicationsTechnologiesIncMember" order="1.2600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="idt_InnovativeCommunicationsTechnologiesIncMember" order="1.2800" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureStockBasedCompensationScheduleOfRiskFreeRateBasedOnUSTreasuryYieldCurveEffectAtTimeOfGrant"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" order="1.0300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" order="1.0400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | </definitionLink> |
| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureStockBasedCompensationSummaryOfStockOptionActivity"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:label="idt_CompensationRelatedCostsShareBasedPaymentsDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrices" xlink:label="idt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrices"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LitigationAndOtherContingenciesTable" xlink:label="idt_LitigationAndOtherContingenciesTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LossContingencyAccrualAmount" xlink:label="idt_LossContingencyAccrualAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LossContingencyAggregateAccrualAmount" xlink:label="idt_LossContingencyAggregateAccrualAmount"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LossContingencyDamagesAwardedPreliminaryValue" xlink:label="idt_LossContingencyDamagesAwardedPreliminaryValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LossContingencyDamagesAwardedValue" xlink:label="us-gaap_LossContingencyDamagesAwardedValue"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LossContingencyDamagesInKindValue" xlink:label="idt_LossContingencyDamagesInKindValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LossContingencyDamagesPaidValue" xlink:label="us-gaap_LossContingencyDamagesPaidValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="us-gaap_LossContingencyDamagesSoughtValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="us-gaap_LossContingencyEstimateOfPossibleLoss"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LossContingencyInterestRateOnDamagesAwarded" xlink:label="idt_LossContingencyInterestRateOnDamagesAwarded"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PatentLitigationExpense" xlink:label="idt_PatentLitigationExpense"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ReasonablyPossibleLiabilityAboveAmountAccrued" xlink:label="idt_ReasonablyPossibleLiabilityAboveAmountAccrued"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TermOfIndefeasibleRightToUse" xlink:label="idt_TermOfIndefeasibleRightToUse"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_WholesaleSupplyAgreementAllegedFailureToPurchaseAmount" xlink:label="idt_WholesaleSupplyAgreementAllegedFailureToPurchaseAmount"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_LitigationAndOtherContingenciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_WholesaleSupplyAgreementAllegedFailureToPurchaseAmount" order="1.0200" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_LegalAndRelatedFeesRelatedToSettlementAgreement" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="us-gaap_GainLossRelatedToLitigationSettlement" order="1.0600" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_AccruedLitigationCharges" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_LossContingencyAggregateAccrualAmount" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_ReasonablyPossibleLiabilityAboveAmountAccrued" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_LegalSettlementByPartyLineItems" xlink:to="idt_TermOfIndefeasibleRightToUse" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_LitigationAndOtherContingenciesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_LitigationAndOtherContingenciesTable" xlink:to="us-gaap_RangeAxis" order="2.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeMember" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_MinimumMember" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_MaximumMember" order="1.2000" priority="2" use="optional"/> |
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| <definitionLink xlink:type="extended" xlink:role="http://www.idt.net/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation"> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_AmountOfTaxAssessmentIncludingInterestAndPenalties" xlink:label="idt_AmountOfTaxAssessmentIncludingInterestAndPenalties"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CommitmentAndContingenciesLineItems" xlink:label="idt_CommitmentAndContingenciesLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CommitmentAndContingenciesTable" xlink:label="idt_CommitmentAndContingenciesTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ConnectivityLeaseRentalExpense" xlink:label="idt_ConnectivityLeaseRentalExpense"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CustomerDepositsCurrent" xlink:label="us-gaap_CustomerDepositsCurrent"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ExciseAndSimilarTaxesMember" xlink:label="idt_ExciseAndSimilarTaxesMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IncomeTaxDescriptionAxis" xlink:label="idt_IncomeTaxDescriptionAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IncomeTaxDescriptionDomain" xlink:label="idt_IncomeTaxDescriptionDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IncomeTaxDescriptionDomain" xlink:label="idt_IncomeTaxDescriptionDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="us-gaap_LeaseAndRentalExpense"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalJudgmentCollaterizedBySuretyBond" xlink:label="idt_LegalJudgmentCollaterizedBySuretyBond"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LettersOfCreditOutstandingAndSuretyBondsAmount" xlink:label="idt_LettersOfCreditOutstandingAndSuretyBondsAmount"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PurchaseObligation" xlink:label="us-gaap_PurchaseObligation"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember_2"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ReasonablyPossibleTaxLiabilityInExcessOfAmountAccrued" xlink:label="idt_ReasonablyPossibleTaxLiabilityInExcessOfAmountAccrued"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SalesTaxAuditMember" xlink:label="idt_SalesTaxAuditMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StandbyLetterOfCreditDueToExpireInOneToThreeYears" xlink:label="idt_StandbyLetterOfCreditDueToExpireInOneToThreeYears"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StandbyLetterOfCreditDueToExpireInThreeToFiveYears" xlink:label="idt_StandbyLetterOfCreditDueToExpireInThreeToFiveYears"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_StandbyLettersOfCreditExpiresWithinOneYear" xlink:label="idt_StandbyLettersOfCreditExpiresWithinOneYear"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TaxAuditPayments" xlink:label="idt_TaxAuditPayments"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TaxLossContingencyAccrualAmount" xlink:label="idt_TaxLossContingencyAccrualAmount"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_CommitmentAndContingenciesLineItems" xlink:to="idt_CommitmentAndContingenciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CommitmentAndContingenciesLineItems" xlink:to="us-gaap_PurchaseObligation" order="1.0200" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CommitmentAndContingenciesLineItems" xlink:to="idt_LegalJudgmentCollaterizedBySuretyBond" order="1.1000" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxDescriptionDomain" xlink:to="idt_SalesTaxAuditMember" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_IncomeTaxDescriptionDomain" xlink:to="idt_ExciseAndSimilarTaxesMember" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeMember" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeMember_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_MinimumMember" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_MaximumMember" order="1.1800" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CommitmentAndContingenciesLineItems" xlink:label="idt_CommitmentAndContingenciesLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_CommitmentAndContingenciesTable" xlink:label="idt_CommitmentAndContingenciesTable"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="idt_CommitmentAndContingenciesLineItems" xlink:to="idt_CommitmentAndContingenciesTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_CommitmentAndContingenciesLineItems" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" order="1.0200" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="idt_CommitmentAndContingenciesTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IDTFinancialServicesCustomerDepositsMember" xlink:label="idt_IDTFinancialServicesCustomerDepositsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="us-gaap_LetterOfCreditMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="us-gaap_RestrictedCashAndCashEquivalents"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RestrictedCashAndCashEquivalentsLongTermMember" xlink:label="idt_RestrictedCashAndCashEquivalentsLongTermMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RestrictedCashAndCashEquivalentsShortTermMember" xlink:label="idt_RestrictedCashAndCashEquivalentsShortTermMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:label="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsAxis" xlink:label="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain" xlink:label="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain" xlink:label="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain_2"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_IDTFinancialServicesCustomerDepositsMember" order="1.0100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="us-gaap_LetterOfCreditMember" order="1.0500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:to="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" order="1.0200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsItemsLineItems" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" order="1.0300" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTable" xlink:to="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsAxis" order="3.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsAxis" xlink:to="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsAxis" xlink:to="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain_2" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain" xlink:to="idt_RestrictedCashAndCashEquivalentsShortTermMember" order="1.0600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="idt_TypeOfRestrictedAndUnrestrictedCashAndCashEquivalentsDomain" xlink:to="idt_RestrictedCashAndCashEquivalentsLongTermMember" order="1.0700" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostsAndExpensesRelatedParty" xlink:label="us-gaap_CostsAndExpensesRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DueFromCTMHoldingsMember" xlink:label="idt_DueFromCTMHoldingsMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_DueToCTMHoldingsMember" xlink:label="idt_DueToCTMHoldingsMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GenieAndSubsidiariesMember" xlink:label="idt_GenieAndSubsidiariesMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IDTDomesticTelecomMember" xlink:label="idt_IDTDomesticTelecomMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_IGMBrokerageCorpMember" xlink:label="idt_IGMBrokerageCorpMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_JonasMediaGroupMember" xlink:label="idt_JonasMediaGroupMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_MasonAndCompanyMember" xlink:label="idt_MasonAndCompanyMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="us-gaap_RelatedPartyDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="us-gaap_RelatedPartyDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionAggregatePaymentMadeToRelatedParty" xlink:label="idt_RelatedPartyTransactionAggregatePaymentMadeToRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionAggregateRentAndBuildOutCostsPaidToRelatedParty" xlink:label="idt_RelatedPartyTransactionAggregateRentAndBuildOutCostsPaidToRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionBillingsToRelatedPartyForServices" xlink:label="idt_RelatedPartyTransactionBillingsToRelatedPartyForServices"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent" xlink:label="us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionEmployeeLoanReceivable" xlink:label="idt_RelatedPartyTransactionEmployeeLoanReceivable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty" xlink:label="us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionLeaseAnnualRentPaymentsToRelatedParty" xlink:label="idt_RelatedPartyTransactionLeaseAnnualRentPaymentsToRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionPeriodOfRentalLeaseWithRelatedParty" xlink:label="idt_RelatedPartyTransactionPeriodOfRentalLeaseWithRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionReductionInSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty" xlink:label="idt_RelatedPartyTransactionReductionInSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionSiteBuildOutCostsPaidToRelatedParty" xlink:label="idt_RelatedPartyTransactionSiteBuildOutCostsPaidToRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RelatedPartyTransactionSquareFootageOfPropertyRentedFromRelatedParty" xlink:label="idt_RelatedPartyTransactionSquareFootageOfPropertyRentedFromRelatedParty"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_GenieAndSubsidiariesMember" order="1.1300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_DueFromCTMHoldingsMember" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_DueToCTMHoldingsMember" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="idt_MasonAndCompanyMember" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="idt_JonasMediaGroupMember" order="1.1400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="idt_IGMBrokerageCorpMember" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="idt_RelatedPartyTransactionReductionInSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty" order="1.0100" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_SegmentDomain" xlink:to="idt_IDTDomesticTelecomMember" order="1.1500" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_BroadstripeLLCMember" xlink:label="idt_BroadstripeLLCMember"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInForeignCountries" xlink:label="us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInForeignCountries"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountriesPercentage" xlink:label="idt_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToForeignCountriesPercentage"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_EntityWideDisclosureOnGeographicAreasTotalAssetsAttributedToForeignCountries" xlink:label="idt_EntityWideDisclosureOnGeographicAreasTotalAssetsAttributedToForeignCountries"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnContractTermination" xlink:label="us-gaap_GainLossOnContractTermination"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnDispositionOfProperty" xlink:label="us-gaap_GainLossOnDispositionOfProperty"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossOnDispositionOfSubsidiary" xlink:label="idt_GainLossOnDispositionOfSubsidiary"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnSaleOfOtherAssets" xlink:label="us-gaap_GainLossOnSaleOfOtherAssets"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:label="us-gaap_GainLossRelatedToLitigationSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossRelatedToLitigationSettlementOtherLoss" xlink:label="idt_GainLossRelatedToLitigationSettlementOtherLoss"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainLossRelatedToSettlement" xlink:label="idt_GainLossRelatedToSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnInsuranceSettlement" xlink:label="idt_GainOnInsuranceSettlement"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GainOnSettlement" xlink:label="idt_GainOnSettlement"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd#country_GB" xlink:label="country_GB"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss" xlink:label="idt_LegalSettlementReflectCurrentEstimatedRangeOfLoss"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="us-gaap_NumberOfReportableSegments"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_OtherServicesMember" xlink:label="idt_OtherServicesMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_PatentLitigationExpense" xlink:label="idt_PatentLitigationExpense"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain"/> |
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| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SegmentReportingDisclosureLineItems" xlink:label="idt_SegmentReportingDisclosureLineItems"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SegmentReportingDisclosureTable" xlink:label="idt_SegmentReportingDisclosureTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SegmentReportingOutsideCountryAxis" xlink:label="idt_SegmentReportingOutsideCountryAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SegmentReportingOutsideCountryDomain" xlink:label="idt_SegmentReportingOutsideCountryDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_SegmentReportingOutsideCountryDomain" xlink:label="idt_SegmentReportingOutsideCountryDomain_2"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TelecomPlatformServicesMember" xlink:label="idt_TelecomPlatformServicesMember"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TMobileMember" xlink:label="idt_TMobileMember"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_SegmentDomain" xlink:to="idt_TelecomPlatformServicesMember" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_SegmentDomain" xlink:to="idt_BroadstripeLLCMember" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_SegmentDomain" xlink:to="idt_TMobileMember" order="1.2000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_SegmentDomain" xlink:to="idt_OtherServicesMember" order="1.2100" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_FairValueMeasurementsPolicyTextBlock" xlink:label="idt_FairValueMeasurementsPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ForeignCurrencyTranslationPolicyTextBlock" xlink:label="idt_ForeignCurrencyTranslationPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_GoodwillPolicyTextBlock" xlink:label="idt_GoodwillPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InternalUseSoftwarePolicy" xlink:label="us-gaap_InternalUseSoftwarePolicy"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_LongLivedAssetsPolicyTextBlock" xlink:label="idt_LongLivedAssetsPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MarketableSecuritiesPolicy" xlink:label="us-gaap_MarketableSecuritiesPolicy"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RecentlyAdoptedAccountingStandardsAndRecentlyIssuedAccountingStandardsNotYetAdoptedPolicyTextBlock" xlink:label="idt_RecentlyAdoptedAccountingStandardsAndRecentlyIssuedAccountingStandardsNotYetAdoptedPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_ReclassificationPolicyTextBlock" xlink:label="idt_ReclassificationPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_RepairAndMaintenancePolicyTextBlock" xlink:label="idt_RepairAndMaintenancePolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_TaxesCollectedFromCustomersAndRemittedToGovernmentalAuthoritiesPolicyTextBlock" xlink:label="idt_TaxesCollectedFromCustomersAndRemittedToGovernmentalAuthoritiesPolicyTextBlock"/> |
| | <loc xlink:type="locator" xlink:href="idt-20120731.xsd#idt_UseOfEstimatesPolicyTextBlock" xlink:label="idt_UseOfEstimatesPolicyTextBlock"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="1.0000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementTable" order="100.0000" xbrldt:closed="true" xbrldt:contextElement="segment" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_DerivativesPolicyTextBlock" order="1.1200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_AdvertisingCostsPolicyTextBlock" order="1.1300" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_InternalUseSoftwarePolicy" order="1.1500" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_RepairAndMaintenancePolicyTextBlock" order="1.1600" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_ForeignCurrencyTranslationPolicyTextBlock" order="1.1700" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_IncomeTaxPolicyTextBlock" order="1.1800" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_CommitmentsAndContingenciesPolicyTextBlock" order="1.1900" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock" order="1.2000" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" order="1.2100" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_TaxesCollectedFromCustomersAndRemittedToGovernmentalAuthoritiesPolicyTextBlock" order="1.2200" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_ConcentrationOfCreditRiskPolicyTextBlock" order="1.2300" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_AllowanceForDoubtfulAccountsPolicyTextBlock" order="1.2400" priority="2" use="optional"/> |
| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_StatementLineItems" xlink:to="idt_FairValueMeasurementsPolicyTextBlock" order="1.2500" priority="2" use="optional"/> |
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| | <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="us-gaap_StatementTable" xlink:to="dei_LegalEntityAxis" order="1.0000" priority="2" use="optional"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis"/> |
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| | <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/> |
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