Alarms - Nortel Meridian 1 Option 11C Manual

B-channel or ISL channel status change
Whenever there is a status change for a B-channel or an ISL channel, the new
status is reported to the far end via a service message. Status change can occur
through service change or maintenance operations, such as the addition or
deletion of a channel in LD 14, or disabling of the associated loop, shelf, card
or unit in LD 30, LD 32, LD 36, LD 41, or LD 60.
Channel status audit
LD 30 is enhanced to allow channel status audit to be initiated. The channels
associated with each D-channel are examined and their status is reported to
the far end via service messages.
Activating service messages
Activate the service messages in LD 96 on a per D-channel basis. The backup
D-channel (if equipped) automatically operates in the same mode as the
primary D-channel. The commands are listed in Table 10.
Table 10
D-channel messages
Command
ENL SERV N
DIS SERV N
STAT SERV (N)
Note: D-channels on each side of the link must be disabled in order to
enable service messages.

Alarms

DTI/PRI Yellow Alarm (remote alarm)
A yellow alarm on the Option 11C, indicated by the state of the YEL LED on
the PRI/DTI circuit card, is notification of a red alarm at the far end (remote
end). The fact that the PRI/DTI circuit card is receiving the yellow alarm
pattern indicates that there is a T1 connection, but the far end is not ready.
DTI/PRI Maintenance
Description
turns on the support of service and service
acknowledge messages for DCH link N.
turns off the support of service and service
acknowledge messages for DCH link N.
displays the current service and service
acknowledge message SERV setting for
individual DCH N or DCH.
Option 11C
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1.5 Mb DTI/PRI