Nortel Networks NN43001-301 - Manual (Page 175)

Installation procedures 175
Upgrade to an NTRB53 Clock Controller on a Single Group and Multi
Group System
Follow these procedures to replace the existing clock controller with the
NTRB53 Clock Controller on Large Systems.
Note: The NTRB53 Clock Controller cannot be combined with a
QPC775 or a QPC471 card in one system.
Procedure 20
Remove old equipment
Step Action
1 Ensure the clock controller card being removed for dual core
systems is on the inactive core. If you need to switch cores go to
LD 135 and enter:
LD 135
SCPU Switch cores
**** Exit the overlay
2 Disable the QPC775 or QPC471 Clock Controller card. At the
prompt, enter:
LD 60 Load the program
SSCK x Get status of system clock where x = 0 or 1
Switch clocks if the clock is active at the prompt, enter:
SWCK Switch system clock from active to standby
SSCK x Get status of system clock where x = 0 or 1
Ensure the other clock controller is active and in the free run mode. At
the prompt, enter:
SSCK x Get status of system clock where x = 0 or 1
TRCK
FRUN Set clock controller tracking to free run
3 Disable the clock controller card you are removing. At the prompt,
enter:
DIS CC x Disable system clock controller where x = 0 or 1
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.