Nortel Networks NN43001-301 manual Ssck, Rcnt

Installation procedures 177

LD 135

SCPU Switch CPU

Note: Wait two minutes before proceeding to the next step.

CAUTION

The following procedure to faceplate disable the active clock controller could impact service.

9Disable the faceplate of the active clock controller to force the newly installed clock controller to activate.

10Disconnect the Clock-to-Clock faceplate cable to J3 of the new clock controller card in the active CPU side

CAUTION

Active calls will experience noise over local and trunk calls

11Verify that the clock controller is active. At the prompt, enter

LD 60
SSCK	Get status of the new system clock, where x = 0 or 1
TRCK PCK	Track primary clock, where x = 0 or 1
RCNT	Resets all alarm counters of all digital cards

****Exit the overlay

Note: Replacing the clock controller will generate errors on the network equipment. It is recommended that all counters be reset.

12Replace the remaining QPC775 or QPC471 clock controller card, tag and disconnect the cables to the card you are removing.

13Unhook the locking devices on the card and pull it out of the card cage.

14Set the ENB/DIS switch to DIS on the replacement card.

15Set the option switches on the replacement card (NTRB53). Refer to Table 67 "Clock Controller switch settings for NTRB53" (page 170).

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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