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  <import namespace="http://fasb.org/us-types/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-types-2013-01-31.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <import namespace="http://fasb.org/us-gaap/2013-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/country/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/currency/2012-01-31" schemaLocation="http://xbrl.sec.gov/currency/2012/currency-2012-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/dei/2013-01-31" schemaLocation="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/exch/2013-01-31" schemaLocation="http://xbrl.sec.gov/exch/2013/exch-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd"/>
  <import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd"/>
  <element name="AcceleratedShareBasedCompensationMember" id="nvtl_AcceleratedShareBasedCompensationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AcquiredIntangibleAssetsAccumulatedAmortization" id="nvtl_AcquiredIntangibleAssetsAccumulatedAmortization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AdditionsToRestructuringReserve" id="nvtl_AdditionsToRestructuringReserve" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AmortizationExpenseMember" id="nvtl_AmortizationExpenseMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AmountForSharePriceFluctuationRelatedToLitigationSettlement" id="nvtl_AmountForSharePriceFluctuationRelatedToLitigationSettlement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AsiaAndAustraliaMember" id="nvtl_AsiaAndAustraliaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AssertedClaimsNotAccruedInFinancial" id="nvtl_AssertedClaimsNotAccruedInFinancial" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="AvailableforsaleSecuritiesGrossUnrealizedGainLossAccumulatedInAoci" id="nvtl_AvailableforsaleSecuritiesGrossUnrealizedGainLossAccumulatedInAoci" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CashEquivalentsAndMarketableSecuritiesHeldAtBank" id="nvtl_CashEquivalentsAndMarketableSecuritiesHeldAtBank" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CashPaidDuringYearAbstract" id="nvtl_CashPaidDuringYearAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CeoTerminationEmploymentContractCostsMember" id="nvtl_CeoTerminationEmploymentContractCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CeoTerminationSharebasedCompensationCostsMember" id="nvtl_CeoTerminationSharebasedCompensationCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CommonStockDistribution" id="nvtl_CommonStockDistribution" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ConsiderationForLitigationSettlementPaidByCompanysInsurers" id="nvtl_ConsiderationForLitigationSettlementPaidByCompanysInsurers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CorporateDebenturesBondsMember" id="nvtl_CorporateDebenturesBondsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerOneMember" id="nvtl_CustomerOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="CustomerTwoMember" id="nvtl_CustomerTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DocumentAndEntityInformationAbstract" id="nvtl_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EuropeLatinAmericaAndAsiaMember" id="nvtl_EuropeLatinAmericaAndAsiaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxInterestBenefitOnUncertainTaxPositions" id="nvtl_IncomeTaxInterestBenefitOnUncertainTaxPositions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" 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="IntangibleLiabilityDisclosureAbstract" id="nvtl_IntangibleLiabilityDisclosureAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" 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="LegalSettlementsPromissoryNotesIssuedAmount" id="nvtl_LegalSettlementsPromissoryNotesIssuedAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LegalSettlementsSharesIssuedValue" id="nvtl_LegalSettlementsSharesIssuedValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" 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="LossContingencyDamagesPaidNetOfPortionPaidByCompanysInsurers" id="nvtl_LossContingencyDamagesPaidNetOfPortionPaidByCompanysInsurers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="M2MProductsAndSolutionsMember" id="nvtl_M2MProductsAndSolutionsMember" type="nonnum:domainItemType" abstract="true" 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="MobileComputingProductsMember" id="nvtl_MobileComputingProductsMember" 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="OtherRelatedExitCostsMember" id="nvtl_OtherRelatedExitCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProbableReliefOnAdditionalCashPayment" id="nvtl_ProbableReliefOnAdditionalCashPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProductWarrantyCoveragePeriod" id="nvtl_ProductWarrantyCoveragePeriod" 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="RestructuringChargesForSharedBasedCompensationAccelerationForTerminationOfChiefExecutiveOfficer" id="nvtl_RestructuringChargesForSharedBasedCompensationAccelerationForTerminationOfChiefExecutiveOfficer" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" 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="SegmentReportingInformationIdentifiableAssetsAbstract" id="nvtl_SegmentReportingInformationIdentifiableAssetsAbstract" type="xbrli:stringItemType" 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="ShortTermMarketableSecuritiesMember" id="nvtl_ShortTermMarketableSecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandThirteenRestructuringMember" id="nvtl_TwoThousandThirteenRestructuringMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" 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="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="UnrestrictedStockMember" id="nvtl_UnrestrictedStockMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
