Lucent Technologies Release 7 User Manual

Page of 2657
DEFINITY Enterprise Communications Server Release 7 
Maintenance for R7r  
555-230-126  
Issue 4
June 1999
Maintenance Object Repair Procedures 
9-149
ATM-BCH (ATM B-Channel Trunk) 
9
B-channel alarms
The Maintenance/Far-End and Out-Of-Service/Far-End states generate warning 
alarms displayed with status trunk 
grp#/mbr#.
Table 9-61.
ATM ISDN service states
Category
Description
Service states
In-Service (INS)
B-channel is in normal 
operating state
Active
A call is connected over 
the B-channel.
Idle
There is no call on the 
B-channel.
Out-of-Service/Far-en
d (OOS/FE)
The switch has not successfully negotiated B-channel connection as of 
yet. Calls cannot be placed or received. 
When you first administer a B-channel, the switch initializes the B-channel 
to this state while it tries to negotiate a connection to the far end. If the 
request times out with no response from the far end, the switch leaves the 
B-channel in the OOS/FE state. 
Out-of-Service/Near-E
nd (OOS/NE)
The NPE Crosstalk Test has failed or the trunk is busied out.  Calls cannot 
be placed or received.
Maintenance/Far-End 
(MTC/FE)
A request has timed out with no response from the far end after signaling 
is in place and B-channels are in service. Calls can be received but not 
placed, and stable calls are unaffected. 
Maintenance/Near-En
d (MTC/NE)
The signaling channel (ISDN-LNK) has been busied out, possibly after a 
test trunk 
grp#/mbr# long command. Calls cannot be placed or 
received, but stable calls are unaffected.
Pending states
1
1.
The switch is waiting for a reply from the far-end. Pending service states remain in effect until the 
near end receives a response or times out.
Pending-in-Service
The near-end is waiting for a response to a transition-to-service request.
Pending-Maintenance
The near-end is waiting for a transition-to-maintenance-service request 
(US and other country-protocol-1 systems).
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