DS26503datasheetTheDS26503isabuilding-integratedtiming-supply(BITS)clock-recoveryelement.ItalsofunctionsasabasicT1/E1transceiver.ThereceiverportioncanrecoveraclockfromT1,E1,and6312kHzsynchronizationtiminginterfaces.InT1andE1modes,theSynchronizationStatusMessage(SSM)canalsoberecovered.