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  <element name="AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInAoci" id="allt_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInAoci" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="NetAssetsFairValueDisclosure" id="allt_NetAssetsFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="DerivativeInstrumentsScheduleOfFairValueOfOutstandingNondesignatedForeignExchangeContractsDetailsAbstract" id="allt_DerivativeInstrumentsScheduleOfFairValueOfOutstandingNondesignatedForeignExchangeContractsDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="PrepaymentToOem" id="allt_PrepaymentToOem" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="CostOfGoodsSoldDeferredRevenue" id="allt_CostOfGoodsSoldDeferredRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" id="allt_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="OtherPayablesAndAccruedExpensesDetailsAbstract" id="allt_OtherPayablesAndAccruedExpensesDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="GovernmentAuthorities" id="allt_GovernmentAuthorities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="HoldbackAndContingentEarnout" id="allt_HoldbackAndContingentEarnout" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="ProvisionForReturns" id="allt_ProvisionForReturns" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="AdvancesFromCustomers" id="allt_AdvancesFromCustomers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="RoyaltyExpensePercentageOfNetSales" id="allt_RoyaltyExpensePercentageOfNetSales" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="RoyaltyExpensePercentageOfGrants" id="allt_RoyaltyExpensePercentageOfGrants" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="LeasePeriod" id="allt_LeasePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="MonthlyRentalExpenses" id="allt_MonthlyRentalExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="OperatingLeasesRentExpensePercentageOfExpensesIncurredPlusManagementFees" id="allt_OperatingLeasesRentExpensePercentageOfExpensesIncurredPlusManagementFees" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="BankGuarantees" id="allt_BankGuarantees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="GuaranteesInFavorOfLease" id="allt_GuaranteesInFavorOfLease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="debit"/>
  <element name="TwoThousandSixStockOptionPlanMember" id="allt_TwoThousandSixStockOptionPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="TwoThousandSixteenPlanMember" id="allt_TwoThousandSixteenPlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="CommonStockValueAuthorized" id="allt_CommonStockValueAuthorized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="OptionsPriceRangeOneMember" id="allt_OptionsPriceRangeOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OptionsPriceRangeTwoMember" id="allt_OptionsPriceRangeTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OptionsPriceRangeThreeMember" id="allt_OptionsPriceRangeThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OptionsPriceRangeFourMember" id="allt_OptionsPriceRangeFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OptionsPriceRangeFiveMember" id="allt_OptionsPriceRangeFiveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="TaxesOnIncomeTable" id="allt_TaxesOnIncomeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="CommencementOfProductionMember" id="allt_CommencementOfProductionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="ApprovalDateMember" id="allt_ApprovalDateMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="IncomeTaxAreaAxis" id="allt_IncomeTaxAreaAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="IncomeTaxAreaDomain" id="allt_IncomeTaxAreaDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="DevelopmentZoneMember" id="allt_DevelopmentZoneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OutsideDevelopmentZoneMember" id="allt_OutsideDevelopmentZoneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="PreferredEnterpriseMember" id="allt_PreferredEnterpriseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="SpecialTechnologicalPreferredEnterpriseMember" id="allt_SpecialTechnologicalPreferredEnterpriseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="ForeignCounterpartyMember" id="allt_ForeignCounterpartyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="TaxesOnIncomeLineItems" id="allt_TaxesOnIncomeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <element name="TaxExemptPeriod" id="allt_TaxExemptPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="TaxBenefitPeriod" id="allt_TaxBenefitPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="DividendWithholdingTaxRate" id="allt_DividendWithholdingTaxRate" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="PatentUseRightPeriod" id="allt_PatentUseRightPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="ExpenseDeductiblePeriod" id="allt_ExpenseDeductiblePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="NetOperatingLossesLimitPercentageOfTotalAccumulatedLosses" id="allt_NetOperatingLossesLimitPercentageOfTotalAccumulatedLosses" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="NetOperatingLossesLimitPercentageOfTaxableIncome" id="allt_NetOperatingLossesLimitPercentageOfTaxableIncome" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="AdditionsToProvisionDuringPeriod" id="allt_AdditionsToProvisionDuringPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="credit"/>
  <element name="DeferredTaxAssetsWroteOffPrepaidAndWithholdingTaxes" id="allt_DeferredTaxAssetsWroteOffPrepaidAndWithholdingTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" xbrli:balance="credit"/>
  <element name="IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceAsResultOfTaxRateChange" id="allt_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceAsResultOfTaxRateChange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="TaxAssetsValuationAllowanceAsResultOfTaxRateOfPreviousYears" id="allt_TaxAssetsValuationAllowanceAsResultOfTaxRateOfPreviousYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="IncomeTaxReconciliationForeignTaxRatesDifferencesRelatedToSubsidiaries" id="allt_IncomeTaxReconciliationForeignTaxRatesDifferencesRelatedToSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="credit"/>
  <element name="IncomeTaxReconciliationChangeInDeferredTaxAssetsChangesInTaxRatesAndDifferentBasisOfMeasurement" id="allt_IncomeTaxReconciliationChangeInDeferredTaxAssetsChangesInTaxRatesAndDifferentBasisOfMeasurement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="OtherExpensesAndExchangeRateDifferences" id="allt_OtherExpensesAndExchangeRateDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="ChangeInExpenseAssociatedWithTaxPositionsForCurrentYear" id="allt_ChangeInExpenseAssociatedWithTaxPositionsForCurrentYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" xbrli:balance="debit"/>
  <element name="AsiaAndOceaniaMember" id="allt_AsiaAndOceaniaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="MiddleEastAndAfricaMember" id="allt_MiddleEastAndAfricaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="MajorCustomerOneMember" id="allt_MajorCustomerOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="MajorCustomerTwoMember" id="allt_MajorCustomerTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="NetworkIntelligenceSolutionsMember" id="allt_NetworkIntelligenceSolutionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="SecuritySolutionsMember" id="allt_SecuritySolutionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <element name="OtherCountriesMember" id="allt_OtherCountriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
</schema>
