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WhatbestdescribesanFXOinterface?()
A.analogtrunksthatprovidetheSurvivableRemoteSiteTelephony(SRST)feature
B.analogtrunksthatprovideVoIPgatewayfunctionality
C.analogtrunksthatconnectagatewaytoplainoldtelephoneservice(POTS)devicesuchasanalogphones,faxmachines,andlegacyvoice-mailsystems
D.analogtrunksthatconnectagatewaytoacentraloffice(CO)orprivatebranchexchange(PBX)
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