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  <element name="ForeignCurrencyExchangeForwardContractsOutstanding" id="nvtl_ForeignCurrencyExchangeForwardContractsOutstanding" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FutureGrantsOfAwardMember" id="nvtl_FutureGrantsOfAwardMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ImpairmentLossOnEquipmentAndSoftwareLicenseIntangibleAssets" id="nvtl_ImpairmentLossOnEquipmentAndSoftwareLicenseIntangibleAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxEffectsAllocatedDirectlyToEquityTableTextBlock" id="nvtl_IncomeTaxEffectsAllocatedDirectlyToEquityTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxReconciliationBusinessCombination" id="nvtl_IncomeTaxReconciliationBusinessCombination" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxReconciliationChangeInUncertainTaxPositions" id="nvtl_IncomeTaxReconciliationChangeInUncertainTaxPositions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInUncertainTaxPositionsDueToReclassificationToLiability" id="nvtl_IncreaseDecreaseInUncertainTaxPositionsDueToReclassificationToLiability" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IntangibleAssetDeductionInImpairmentCharge" id="nvtl_IntangibleAssetDeductionInImpairmentCharge" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IntangibleAssetsImpairedAccumulatedImpairmentLoss" id="nvtl_IntangibleAssetsImpairedAccumulatedImpairmentLoss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InternalRevenueCodeOwnershipPercentageChange" id="nvtl_InternalRevenueCodeOwnershipPercentageChange" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InternalRevenueCodeOwnershipPercentageChangeDescription" id="nvtl_InternalRevenueCodeOwnershipPercentageChangeDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LitigationPolicyTextBlock" id="nvtl_LitigationPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermInvestmentsMaturityPeriod" id="nvtl_LongTermInvestmentsMaturityPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermMarketableSecuritiesMember" id="nvtl_LongTermMarketableSecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LongTermMember" id="nvtl_LongTermMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketableEquitySecuritiesReceivedInSettlementOfNoteReceivable" id="nvtl_MarketableEquitySecuritiesReceivedInSettlementOfNoteReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketableSecuritiesHighlyLiquidDebtInvestmentsMaturityPeriod" id="nvtl_MarketableSecuritiesHighlyLiquidDebtInvestmentsMaturityPeriod" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketableSecuritiesMaturityInYears" id="nvtl_MarketableSecuritiesMaturityInYears" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MarketDevelopmentFundAndPriceProtection" id="nvtl_MarketDevelopmentFundAndPriceProtection" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaturityPeriodOfHighlyLiquidInvestmentsMaximum" id="nvtl_MaturityPeriodOfHighlyLiquidInvestmentsMaximum" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MobileComputingProductsMember" id="nvtl_MobileComputingProductsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NatureOfBusinessAndSignificantAccountingPoliciesAbstract" id="nvtl_NatureOfBusinessAndSignificantAccountingPoliciesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NatureOfBusinessAndSignificantAccountingPoliciesLineItems" id="nvtl_NatureOfBusinessAndSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NatureOfBusinessAndSignificantAccountingPoliciesTable" id="nvtl_NatureOfBusinessAndSignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="NewHireMember" id="nvtl_NewHireMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonCashIncomeTaxExpenseBenefit" id="nvtl_NonCashIncomeTaxExpenseBenefit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OperatingLossCarryforwardsExpirationDateOne" id="nvtl_OperatingLossCarryforwardsExpirationDateOne" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OtherRelatedExitCostsMember" id="nvtl_OtherRelatedExitCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOfOperatingResultsConsideredForContingentConsideration" id="nvtl_PeriodOfOperatingResultsConsideredForContingentConsideration" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromStockOptionExercisesAndEsppNetOfTaxesPaidOnVestedRestrictedStockUnits" id="nvtl_ProceedsFromStockOptionExercisesAndEsppNetOfTaxesPaidOnVestedRestrictedStockUnits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProductWarrantyPeriods" id="nvtl_ProductWarrantyPeriods" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PurchasedIntangibleAssetAmortizationExpenseClassificationTableTextBlock" id="nvtl_PurchasedIntangibleAssetAmortizationExpenseClassificationTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecognizedTaxBenefitResultingFromLapseOfApplicableStatuteOfLimitations" id="nvtl_RecognizedTaxBenefitResultingFromLapseOfApplicableStatuteOfLimitations" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ResearchAndDevelopmentTaxCredits" id="nvtl_ResearchAndDevelopmentTaxCredits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringMember" id="nvtl_RestructuringMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SecuredPromissoryNoteMember" id="nvtl_SecuredPromissoryNoteMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeptemberEighteenthTwoThousandEightMember" id="nvtl_SeptemberEighteenthTwoThousandEightMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeptemberFifteenthTwoThousandEightMember" id="nvtl_SeptemberFifteenthTwoThousandEightMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodAfterYearOne" id="nvtl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodAfterYearOne" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShortTermMarketableSecuritiesMember" id="nvtl_ShortTermMarketableSecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShortTermMember" id="nvtl_ShortTermMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SignificantRevenueFromMultipleElementOrSoftwareArrangements" id="nvtl_SignificantRevenueFromMultipleElementOrSoftwareArrangements" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodSharesExerciseOfStockOptionsVestingOfRestrictedStockUnitsAndEmployeeStockPurchasePlan" id="nvtl_StockIssuedDuringPeriodSharesExerciseOfStockOptionsVestingOfRestrictedStockUnitsAndEmployeeStockPurchasePlan" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodValueExerciseOfStockOptionsVestingOfRestrictedStockUnitsAndEmployeeStockPurchasePlan" id="nvtl_StockIssuedDuringPeriodValueExerciseOfStockOptionsVestingOfRestrictedStockUnitsAndEmployeeStockPurchasePlan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsMaximumSharesAvailableForGrant" id="nvtl_StockOptionsMaximumSharesAvailableForGrant" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsYearOneVestingRate" id="nvtl_StockOptionsYearOneVestingRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfCommonSharesReservedForFutureIssuanceTableTextBlock" id="nvtl_SummaryOfCommonSharesReservedForFutureIssuanceTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplementalDisclosuresOfNonCashFinancingActivitiesAbstract" id="nvtl_SupplementalDisclosuresOfNonCashFinancingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxesWithheldOnNetSettledVestingOfRestrictedStockUnits" id="nvtl_TaxesWithheldOnNetSettledVestingOfRestrictedStockUnits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UncertainIncomeTaxPositionUnrecognized" id="nvtl_UncertainIncomeTaxPositionUnrecognized" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UncertainTaxPositionRecognitionThreshold" id="nvtl_UncertainTaxPositionRecognitionThreshold" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnitedStatesAndCanadaMember" id="nvtl_UnitedStatesAndCanadaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="UnrecognizedTaxBenefitsExpectedToBeRealizedInNextTwelveMonths" id="nvtl_UnrecognizedTaxBenefitsExpectedToBeRealizedInNextTwelveMonths" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WorkingCapital" id="nvtl_WorkingCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
