Replacing An Nt7E08 Ds3 Mapper - Nortel SONET AccessNode User Manual

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7-50 Replacing modules in a common-equipment shelf
Procedure 7-18

Replacing an NT7E08 DS3 mapper

Use this procedure to replace a DS3 mapper circuit pack in an access
bandwidth manager (ABM) shelf.
Action
Step
1
2
3
4
AccessNode P0904244 Issue 1.0
Action
From the Network Element Status screen, display the DS3 protection screen:
pr;dtlprot ds3↵
The detailed DS3 protection screen appears.
Perform one of the following:
If replacing
protection DS3 mapper
an active DS3 mapper
a failed or out-of-service DS3 mapper
From the Network element user interface (NEUI) detailed DS3 protection
screen, ensure that there is no protection switching in effect.
CAUTION
Loss of service
Ensure that there is no protection switching in effect before
locking out the protection DS3 mapper. Lockout of an
active protection DS3 mapper can result in loss of service
if traffic from the protection DS3 mapper is switched back
to an out-of-service working DS3 mapper.
Note: An asterisk (*) under the Forced, AutoSw or Manual heading
indicates if protection switching is in effect and indicates if the protection DS3
mapper is currently taking over the function of one of the working DS3
mappers. (See the detailed DS3 protection screen in step 1.)
Lockout the protection mapper:
lockout op p↵
y↵
When a lockout is operated, the screen displays an asterisk (*) in the
Lockout column.
Skip to step 7.
—continued—
Then go to
step 3
step 5
step 9

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