Nortel Networks NN43001-301 manual Channel parameter downloading, Remove the QPC757 Dchi

Models: NN43001-301

1 306
Download 306 pages 36.63 Kb
Page 90
Image 90

90DCH installation

D-channel parameter downloading

The system software automatically downloads new parameters to each D-channel Interface (DCHI) circuit card upon SYSLOAD. When this occurs, the D-channel is temporarily disabled and then automatically reenabled.

Three situations require manual disabling and enabling of each DCHI to ensure parameter downloading:

Performing a parallel load and switching over to the second CPU

Following an alarm condition for the T1 loop carrying the D-channel (but the D-channel is still operational)

Following SYSLOAD when using ISDN Signaling Link (ISL)

Remove the QPC757 DCHI

Use Procedure 4 "Remove the QPC757 DCH" (page 90) to remove the QPC757 DCHI card from Large Systems.

CAUTION

The QPC757 DCH must be software disabled before it is hardware disabled to prevent initialization

Procedure 4

Remove the QPC757 DCH

Step Action

1Disable the QPC757 DCHI using LD 96, command DIS DCH x.

2Disable asynchronous port J1 in LD 48 to prevent initialization.

3Disable loop in LD 60.

4If the circuit card is being removed, not replaced, remove data from memory.

5Determine the cabinet and shelf location of the card to be removed.

6Set faceplate toggle switch to DISABLE.

7Disconnect QPC757 DCHI cables.

8Remove QPC757 DCHI card.

9Pack and store circuit card.

—End—

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

Page 90
Image 90
Nortel Networks NN43001-301 manual Channel parameter downloading, Remove the QPC757 Dchi, Procedure Remove the QPC757 DCH