Clock Rate Converter - Avaya Nortel Communication Server 1000 Reference

of the clock controller, the clock controller interface enables or disables the appropriate
reference clock source, in conjunction with software.
Important:
Each Media Gateway that has a digital trunk must have a clock controller clocked to an
external reference clock.
Note:
Clocking slips can occur between systems that are clocked from different Central Offices
(COs), if the COs are not synchronized. The slips can degrade voice quality.

Clock rate converter

The 1.5 Mb clock is generated by a Phase-Locked Loop (PLL). The PLL synchronizes the 1.5
Mb DS1 clock to the 2.56 Mb system clock through the common multiple of 8 kHz by using the
main frame synchronization signal.
Circuit Card Reference
Architecture
July 2011 499