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  <element id="bdc_IntercompanyInvestmentsInSubsidiaries" name="IntercompanyInvestmentsInSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="bdc_SupplementalGuarantorInformationTextualAbstract" name="SupplementalGuarantorInformationTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_ShareRepurchaseProgramTextualAbstract" name="ShareRepurchaseProgramTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_PensionFundingLessThanGreaterThanPensionExpense" name="PensionFundingLessThanGreaterThanPensionExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="bdc_LineOfCreditInterestRateLiborTerm" name="LineOfCreditInterestRateLiborTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="bdc_OperatingSegmentInformationAbstract" name="OperatingSegmentInformationAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_IntercompanyCapitalContributionsAndDividends" name="IntercompanyCapitalContributionsAndDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="bdc_NumberOfOperatingSegments" name="NumberOfOperatingSegments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_LengthOfFiscalQuarter" name="LengthOfFiscalQuarter" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_CashEquivalentMaturityPeriodMaximum" name="CashEquivalentMaturityPeriodMaximum" type="us-types:durationStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_DebtInstrumentAmountRepurchased" name="DebtInstrumentAmountRepurchased" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="bdc_DebtInstrumentAmountPermittedToBeRepurchased" name="DebtInstrumentAmountPermittedToBeRepurchased" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="bdc_ImpactOfReclassificationsToReportedNetIncome" name="ImpactOfReclassificationsToReportedNetIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="bdc_LongLivedAssetsTextualAbstract" name="LongLivedAssetsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_LongLivedAssetsAbstract" name="LongLivedAssetsAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_OperatingSegmentsTextualAbstract" name="OperatingSegmentsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_IncomePerShareTextualAbstract" name="IncomePerShareTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_PropertyPlantAndEquipmentAndIntangibleAssetsDisclosuresTextBlock" name="PropertyPlantAndEquipmentAndIntangibleAssetsDisclosuresTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_CommunicationsCableOperationInPhoenixArizonaMember" name="CommunicationsCableOperationInPhoenixArizonaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_SummaryOfSignificantAccountingPoliciesTextBlock" name="SummaryOfSignificantAccountingPoliciesTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="bdc_StockRepurchaseProgramCumulativeAmountRepurchased" name="StockRepurchaseProgramCumulativeAmountRepurchased" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
</schema>
