Nortel Communication Server 1000 Manual page 167

Table 90
installing or replacing the QPC775 or NTRB53 Clock Controller (cont'd.)
Step Action
16 Repeat steps 2 to 14 for second Clock Controller.
17
To track on a primary or secondary reference clock, use LD 60. The command is:
TRCKPCK (for Primary)
SCK (for Secondary)
FRUN (for Free-Run)
Tracking on a Reference Clock: The Clock Controller will be in free-run mode
when enabled. It should stay in this mode for several minutes before being
switched to tracking mode.
Table 91 "Installing or replacing the QPC775 or NTRB53 Clock Controller"
(page 167)
NTRB53 Clock Controller card.
Table 91
Installing or replacing the QPC775 or NTRB53 Clock Controller
Step Action
1 Unpack and inspect circuit cards. (Note that Multi Group systems require QPC775E
or NTRB53 cards.)
2
Set option switches and insert option plugs on the Clock Controller being added.
SW2 - OFF
SW3 - OFF
SW4 (1,2) - ON
"ON" in switch setting also means "1" or "CLOSED". "OFF" in switch setting also
means "0" or "OPEN".
Installing or replacing the QPC775 or NTRB53 on Multi Group System 167
outlines the steps used to install or replace the QPC775 or
CAUTION
Service Interruption
Do not deviate from this procedure. Deviation will not cause the
switch to SYSLOAD or initialize, but will stop call processing.
CAUTION
Service Interruption
If CC-0 is to be replaced, CC-1 and CPU-1 must be active.
Similarly, if CC-1 is to be replaced, CC-0 and CPU-0 must be
active.
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
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