Nortel Meridian 1 Replacement Manual page 315

Switch call processing from Core 0 to Core 1
Call processing will be interrupted
Perform the next steps carefully. This is the point at which your service
is interrupted. Calls in progress will be interrupted, especially if
Peripheral Software Download takes place.
Perform the next 4 steps in succession. Call processing will be switched
from Core 0 to Core 1.
1 In Core 0, set the DIS/ENB faceplate switch on the IOP or IOP/CMDU
card to DIS.
2 In Core 0, disable the NT6D65 CNI cards by setting the ENB/DIS
faceplate switches to DIS.
3 In Core 1, enable the NT6D65 CNI cards by setting the ENB/DIS
faceplate to ENB.
4 In Core 1, press the MAN INT button.
After the system initialization has finished (INI messages are no longer
displayed on the system terminal), check for dial tone on a telephone set.
5 Following a successful dial tone test, perform the following basic sanity
tests:
— Make sure calls can be placed
— Check for error messages, line noise, chatter, or other problems.
Track sources and resolve problems as necessary.
Replacing equipment
CAUTION
Page 315 of 362
Hardware replacement