Nortel Networks 311 Clock rate converter

878 NTAK091.5 Mb DTI/PRI card
ATTENTION
IMPORTANT!
Each Media Gatewaythat has a digital trunk must havea 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.
The purpose of the clock controller interface is to provide the recovered
clock from the external digital facilityto the clock controller daughterboard
via the backplane. Depending on the equipped state of the clock controller,
the clock controller interface enables or disablesthe appropr iate reference
clock source, in conjunction with software.
The clock controller interface provides the recoveredclock from the external
digital facility to the clock controller daughterboard through the backplane.
Depending on the equipped state of the clock controller, the clock controller
interface enables or disables the appropriate reference clock source,in
conjunction with software.
ATTENTION
IMPORTANT!
Each Media Gatewaythat has a digital trunk must havea clock controller clocked
to an external reference clock.
Note: Clocking slips can occur between systems that are clocked from
different COs, if the COsare not synchronized. The slips can degrade
voice quality.
Clock rate converter
The 1.5 Mb clock is generated by a Phase-LockedLoop (PLL). The PLL
synchronizes the 1.5 Mb DS1 clockto the 2.56 Mb system clock through the
common multiple of 8 kHz by using the main frame synchronization signal.
The 1.5 Mb clock is generated by a Phase-LockedLoop (PLL). The PLL
synchronizes the 1.5 Mb DS1 clockto the 2.56 Mb system clock through the
common multiple of 8 kHz by using the main frame synchronization signal.
The 1.5 Mb clock is generated by a phase-lockedloop (PLL). The PLL
synchronizes the 1.5 Mb DS1 clockto the 2.56 Mb system clock through the
common multiple of 8 kHz by using the main frame synchronization signal.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.