Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Error Logs, Access Logs, and System Inventory
Page 2-16
Error Logs
Table 2-2 Continued
Continued on next page
Error
Codes Description Action
7402 LOOP CONTROL BIT NOT SET:
No loop current on an outgoing call.
If this error occurs four times
consecutively, and if Automatic
Maintenance-Busy is enabled and
the 50% maintenance-busy limit has
not been exceeded, the trunk is
busied-out automatically.
Test the trunk with a single-line
telephone. If the problem is not in the
trunk, replace the module with one that is
known to be working. If the problem is
gone when using the known good
module, replace the module and restart.
7403 NO LOOP CURRENT:
Communication problems between
the module and central office.
No loop current.
If this error occurs four times
consecutively, and if Automatic
Maintenance-Busy is enabled and
the 50% maintenance-busy limit has
not been exceeded, the trunk is
busied-out automatically.
Test the trunk with a single-line
telephone. If the problem is not in the
trunk, replace the module with one that is
known to be working. If the problem is
gone when using the known good
module, replace the module and restart.
7404 STUCK RINGING:
Communication problems between
the module and central office.
If this error occurs twice
consecutively, the trunk is busied-out
automatically, whether or not
Automatic Maintenance-Busy is
enabled.
Test the trunk with a single-line
telephone. If the problem is not in the
trunk, replace the module with one that is
known to be working. If the problem is
gone when using the known good
module, replace the module and restart.
7801 NOT IN NORMAL OP MODE:
Module not in normal operation
mode. Reported in background
module check.
Reset the board
. If problem persists,
troubleshoot the module.
Maintenance→Slot→Slot
Number→Reset