AT&T MERLIN LEGEND Release 3.0 Installation Manual page 363

Error Logs
Table 2-2 Continued
Error
Codes Description
840B NO LOOP CURRENT:
communication problems between
the module and the central office. No
loop current.
If this error occurs 4 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.
840C STUCK RINGING:
Communication problems between
the module and central office.
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.
840D
INCORRECT FIRMWARE STATE:
If this error occurs 4 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.
Action
Replace the module with a similar
module and test, If the problem is
resolved, replace the bad module. If the
problem persists, reinstall the old module
and test the trunk.
Replace the module with a similar
module and test. If the problem is
resolved, replace the bad module. If the
problem persists, reinstall the old module
and test the trunk.
Turn power off for at least 1 second and
then turn it on. Repeat system
programming procedure. If problem
persists, replace the module.
Error Logs, Access Logs, and System Inventory 2-17
Continued on next page