mscLpDS1ClockingSource 1.3.6.1.4.1.562.36.2.1.12.7.10.1.3

This attribute defines the source of the transmit clock for the DS1 line. When local is selected, the crystal on the port generates the clocking for the line. When line is selected, the port synchronizes to the clock from the facility. When module is selected, the ports clock synchronizes to the clock provided by the oscillator on the active CP. When otherPort is selected, the port synchronizes to the port with a clocking source of line. When srtsMode is selected, the port transmit frequency depends on the SRTS (Synchronous Residual Time-Stamp) received over the ATM network. SRTS information is also generated sent over the ATM network. When adaptiveMode is selected, the port transmit frequency continually adapts to match the egress data received from the ATM network. A port with srtsMode or adaptiveMode must have a single Chan which may be linked only to an Aal1Ces.service with serviceType unstructured If the NetworkSynchronization component is present, the default value of this attribute is module, otherwise it defaults to line, except for the 3pDS1Atm card, which it defaults to local. On a 3pDS1Atm card all ports must have the same value, and be either local or module. otherPort is valid only on AAL1 cards. srtsMode is valid only on AAL1 and Multi-Service Access cards. adaptiveMode is valid only on Multi-Service Access cards. On 4DS1Aal1 cards either: all four ports' clockingSource values must be local OR all four ports' clockingSource values must be module OR one port's clockingSource value must be line and the other three must be otherPort. A port can only have srtsMode selected if the other ports are module or srtsMode.