Nortel Communication Server 1000S Installation And Configuration Manual page 206

Page 206 of 394
553-3001-201 Standard 2.00
Clock Controller description and installation
Figure 66
Example 7, Network Clocking with MUX
Master clock
Central
Office
Master clock
Central
Office
In this example, the direct connection to the CO (without a MUX) should be
used as a primary clock reference because this is where the least amount of
hardware is involved. The MUX must pass the clock and not generate its own
clock; in other words, it must be a slave (not Free Run). Synchronized
clocking is required.
September 2004
Clocking off Master:
Tracking on Primary loop Y
and loop X used as a
secondary clock source.
Small System
loop X MUX
loop Y
Small System
Clocking off Master:
Tracking on Primary
loop Z, no secondary
clock source
LD 60
TRCK PCK
Slave
LD 73:
PREF loop Y
SREF loop X
MUX
loop Z
MUX
LD 60
TRCK PCK
Slave
LD 73:
PREF loop Z
SREF <cr>
553-AAA0071