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  <xs:element id="optu_FaceAmountOfSeniorGuaranteedNotes" abstract="false" name="FaceAmountOfSeniorGuaranteedNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_CarryingAmountOfSeniorGuaranteedNotes" abstract="false" name="CarryingAmountOfSeniorGuaranteedNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_FaceAmountOfCreditFacilityDebt" abstract="false" name="FaceAmountOfCreditFacilityDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_CarryingValueOfCreditFacilityDebt" abstract="false" name="CarryingValueOfCreditFacilityDebt" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_FaceAmountOfSeniorNotesAndSeniorSecuredNotes" abstract="false" name="FaceAmountOfSeniorNotesAndSeniorSecuredNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_CarryingAmountOfSeniorNotesAndSeniorSecuredNotes" abstract="false" name="CarryingAmountOfSeniorNotesAndSeniorSecuredNotes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_LightpathFiberIssuerLLCSeries20261ClassA25.597NotesDue2031Member" abstract="true" name="LightpathFiberIssuerLLCSeries20261ClassA25.597NotesDue2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_LightpathFiberIssuerLLCSeries20261ClassB5.597NotesDue2031Member" abstract="true" name="LightpathFiberIssuerLLCSeries20261ClassB5.597NotesDue2031Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_SecuredFiberNetworkRevenueNotesMember" abstract="true" name="SecuredFiberNetworkRevenueNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_LightpathVariableFundingNotesMember" abstract="true" name="LightpathVariableFundingNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_LightpathCreditFacilitySeniorSecuredAndSeniorNotesMember" abstract="true" name="LightpathCreditFacilitySeniorSecuredAndSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_IncrementalUnsubGroupCreditFacilityMember" abstract="true" name="IncrementalUnsubGroupCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_LightpathLiquidityFundingNotesMember" abstract="true" name="LightpathLiquidityFundingNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_SecondAmendmentToUnsubGroupCreditFacilityMember" abstract="true" name="SecondAmendmentToUnsubGroupCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_LineOfCreditFacilityAbilityToExpandMaximumBorrowingCapacity" abstract="false" name="LineOfCreditFacilityAbilityToExpandMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_RedeemablePreferredUnitsMember" abstract="true" name="RedeemablePreferredUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_ClassAAndClassBSharesCombinedMember" abstract="true" name="ClassAAndClassBSharesCombinedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_DividendOnRedeemablePreferredUnitsIfPaidInCash" abstract="false" name="DividendOnRedeemablePreferredUnitsIfPaidInCash" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_DividendOnRedeemablePreferredUnitsIfCompounded" abstract="false" name="DividendOnRedeemablePreferredUnitsIfCompounded" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_DividendOnRedeemablePreferredUnitsIncreaseIfTriggeredByCertainEvents" abstract="false" name="DividendOnRedeemablePreferredUnitsIncreaseIfTriggeredByCertainEvents" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_TenderOfferPricePerShare" abstract="false" name="TenderOfferPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="optu_ValueOfSharesExchangedForRedeemablePreferredUnitsByDirectorsAndExecutiveManagement" abstract="false" name="ValueOfSharesExchangedForRedeemablePreferredUnitsByDirectorsAndExecutiveManagement" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_NumberOfSharesExchangedForRedeemablePreferredShares" abstract="false" name="NumberOfSharesExchangedForRedeemablePreferredShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="optu_NumberOfSharesExchangedForRedeemablePreferredUnitsByControllingShareholder" abstract="false" name="NumberOfSharesExchangedForRedeemablePreferredUnitsByControllingShareholder" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="optu_RedeemablePreferredUnitsIssuedNotConvertibleToShares" abstract="false" name="RedeemablePreferredUnitsIssuedNotConvertibleToShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_PurchasePriceOfUnits" abstract="false" name="PurchasePriceOfUnits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_PercentOfSharesOwnedByControllingShareholderPriorToPrivateExchange" abstract="false" name="PercentOfSharesOwnedByControllingShareholderPriorToPrivateExchange" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_PercentOfSharesOwnedByControllingShareholderAfterPrivateExchange" abstract="false" name="PercentOfSharesOwnedByControllingShareholderAfterPrivateExchange" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_SeniorGuaranteeNotesMember" abstract="true" name="SeniorGuaranteeNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_IncomeTaxTable" abstract="true" name="IncomeTaxTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="optu_IncomeTaxLineItems" abstract="true" name="IncomeTaxLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="optu_DeferredCashDenominatedPerformanceAwardMember" abstract="true" name="DeferredCashDenominatedPerformanceAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_OtherAwardsMember" abstract="true" name="OtherAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_A2017LTIPMember" abstract="true" name="A2017LTIPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_A2019LTIPMember" abstract="true" name="A2019LTIPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_ShareBasedCompensationUnrecognizedDeferredCompensationCost" abstract="false" name="ShareBasedCompensationUnrecognizedDeferredCompensationCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_AmountOfDeferredCashPerformanceAwardsOutstanding" abstract="false" name="AmountOfDeferredCashPerformanceAwardsOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_ClassA1ManagementIncentiveUnitsMember" abstract="true" name="ClassA1ManagementIncentiveUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_ClassA2ManagementIncentiveUnitsMember" abstract="true" name="ClassA2ManagementIncentiveUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_DeferredCashDenominatedAwardMember" abstract="true" name="DeferredCashDenominatedAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_A2021LightpathIncentivePlanMember" abstract="true" name="A2021LightpathIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_PayoutAmountBasedOnMeetingTargetValuesForDeferredCashPerformanceAwards" abstract="false" name="PayoutAmountBasedOnMeetingTargetValuesForDeferredCashPerformanceAwards" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="optu_GrantDateFairValueOfAwardUnits" abstract="false" name="GrantDateFairValueOfAwardUnits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_RelatedPartyTransactionCostandExpenses" abstract="false" name="RelatedPartyTransactionCostandExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_AlticeEuropeMember" abstract="true" name="AlticeEuropeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_OtherRelatedPartyMember" abstract="true" name="OtherRelatedPartyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_I24NewsMember" abstract="true" name="I24NewsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_CaptiveMember" abstract="true" name="CaptiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_OptimumCommunicationsMember" abstract="true" name="OptimumCommunicationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_MaximumReimbursementOfCertainLiabilities" abstract="false" name="MaximumReimbursementOfCertainLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_AmountOfReimbursementRecordedThroughEquity" abstract="false" name="AmountOfReimbursementRecordedThroughEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_NoncashPaymentsOfCapitalDistribution" abstract="false" name="NoncashPaymentsOfCapitalDistribution" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_CSCHoldingsRestrictedGroupMember" abstract="true" name="CSCHoldingsRestrictedGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="optu_AssetsLongTerm" abstract="false" name="AssetsLongTerm" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_NumberOfSharesPurchasedFromTenderOffer" abstract="false" name="NumberOfSharesPurchasedFromTenderOffer" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="optu_MonetaryValueOfTenderOffer" abstract="false" name="MonetaryValueOfTenderOffer" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_ProgrammingCosts" abstract="false" name="ProgrammingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_OtherDirectCosts" abstract="false" name="OtherDirectCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_SalesAndMarketingDepartment" abstract="false" name="SalesAndMarketingDepartment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_NetworkServices" abstract="false" name="NetworkServices" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="optu_OtherOperatingExpenses" abstract="false" name="OtherOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
