Nortel Networks NN43001-301 - Manual (Page 176)

176 Clock Controller description and installation
4 Set the ENL/DIS switch to DIS on the card you are removing.
5 Tag and disconnect the cables to the card you are removing.
6 Unhook the locking devices on the card and pull it out of the card
cage.
—End—
Follow these procedures to install new equipment with Clock Controller on
Large Systems.
Procedure 21
Installing new equipment
Step Action
1 Set the ENB/DIS switch to DIS on the replacement card.
2 Set the option switches on the replacement card (NTRB53). Refer to
Table 67 "Clock Controller switch settings for NTRB53" (page 170) .
3 Insert the replacement card into the vacated slot and hook the
locking devices.
4 Connect the reference cables (J1 and J2) to the replacement card.
CAUTION
Clock-to-Clock cable J3 should never be connected
between the old clock (QPC471 or QPC775) and the new
clock (NTRB53).
5 Set the ENB/DIS switch to ENB on the replacement card.
6 Software enable the card. At the prompt, enter
LD 60
ENL CC x Enable clock controller card, where x = 0 or 1
7 Verify that the card is active. At the prompt, enter:
SSCK x Get status of system clock where x = 0 or 1
**** Exit the overlay
8 Switch to the core with the new clock. At the prompt, enter:
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
.