Nortel Networks NN43001-301 Manuel d'utilisateur télécharger pdf (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

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

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

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

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Nortel Networks NN43001-301 Manuel d'utilisateur Page 175