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  <element name="RangeOneMember" id="comm_RangeOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeSixMember" id="comm_RangeSixMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeThreeMember" id="comm_RangeThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RangeTwoMember" id="comm_RangeTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecentAccountingPronouncementsPolicyTextBlock" id="comm_RecentAccountingPronouncementsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RedwoodMember" id="comm_RedwoodMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RedwoodSystemsIncMember" id="comm_RedwoodSystemsIncMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RepurchaseOfStockUponStockOptionExercise" id="comm_RepurchaseOfStockUponStockOptionExercise" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringChargesNet" id="comm_RestructuringChargesNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReversalOfValuationAllowancePreviouslyEstablishedNetOperatingLosses" id="comm_ReversalOfValuationAllowancePreviouslyEstablishedNetOperatingLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfRestrictedStockActivityLineItems" id="comm_ScheduleOfRestrictedStockActivityLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfRestrictedStockActivityTable" id="comm_ScheduleOfRestrictedStockActivityTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SeniorNoteDueJuneTwoThousandTwentyFourMember" id="comm_SeniorNoteDueJuneTwoThousandTwentyFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorNotesDueJanuaryTwoThousandNineteenMember" id="comm_SeniorNotesDueJanuaryTwoThousandNineteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorNotesDueJuneTwoThousandTwentyOneMember" id="comm_SeniorNotesDueJuneTwoThousandTwentyOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorPaymentInKindToggleNotesDueJuneTwoThousandTwentyMember" id="comm_SeniorPaymentInKindToggleNotesDueJuneTwoThousandTwentyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorPaymentInKindToggleNotesMember" id="comm_SeniorPaymentInKindToggleNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorSecuredRevolvingCreditFacilityMember" id="comm_SeniorSecuredRevolvingCreditFacilityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorSecuredTermLoanDueJanuaryTwoThousandEighteenMember" id="comm_SeniorSecuredTermLoanDueJanuaryTwoThousandEighteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorSecuredTermLoanDueJanuaryTwoThousandSeventeenMember" id="comm_SeniorSecuredTermLoanDueJanuaryTwoThousandSeventeenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SeniorSecuredTermLoanMember" id="comm_SeniorSecuredTermLoanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestNumber" id="comm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestNumber" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustment" id="comm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustment" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustmentWeightedAverageExercisePrice" id="comm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustmentWeightedAverageExercisePrice" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustmentWeightedAverageGrantDateFairValue" id="comm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPerformanceBasedAdjustmentWeightedAverageGrantDateFairValue" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareUnitAwardExpense" id="comm_ShareUnitAwardExpense" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockholdersEquityLineItems" id="comm_StockholdersEquityLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockholdersEquityTable" id="comm_StockholdersEquityTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="StockRepurchasedDuringPeriodSharesEquityBasedCompensationPlans" id="comm_StockRepurchasedDuringPeriodSharesEquityBasedCompensationPlans" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandTwentyFourSeniorNotesMember" id="comm_TwoThousandTwentyFourSeniorNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoThousandTwentyOneNotesMember" id="comm_TwoThousandTwentyOneNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ValuationAllowanceForeignTaxCredit" id="comm_ValuationAllowanceForeignTaxCredit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WirelessMember" id="comm_WirelessMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>


