Filter
Top Products
MERLIN LEGEND Communications System Release 7.0
Pocket Reference
555-670-116
Issue 1
April 1999
119
Reference Documents
Maintenance Error Codes
—Continued
Technical Addendum
Error
Code Description Action
7401 TRK UPLINK MESSAGE
ERROR:
Communication problems
between processor and modules;
unrecognized message from
module to processor.
Test trunk with single-line
telephone. If problem is not in
trunk, replace module with one
known to work. If problem is not
seen with known working
module, replace module and
restart.
7402 LOOP CONTROL BIT NOT
SET:
No loop current on outgoing call. If
error occurs four times
consecutively, and if automatic
maintenance-busy is enabled with
less than 50% maintenance busy,
trunk is busied-out automatically.
Test trunk with single-line
telephone. If problem is not in
trunk, replace module with one
known to work. If problem is not
seen with known working
module, replace module and
restart.
7403 NO LOOP CURRENT:
Communication problems
between module and CO. No loop
current. If error occurs four times
consecutively, and if automatic
maintenance-busy is enabled with
less than 50% maintenance busy,
trunk is busied-out automatically.
Test trunk with single-line
telephone. If problem is not in
trunk, replace module with one
known to work. If problem is not
seen with known working
module, replace module and
restart.
7404 STUCK RINGING:
Communication problems
between module and CO. If error
occurs two times consecutively,
trunk is busied-out automatically
whether or not automatic
maintenance-busy is enabled.
Test trunk with single-line
telephone. If problem is not in
trunk, replace module with one
known to work. If problem is not
seen with known working
module, replace module and
restart.
7801 NOT IN NORMAL OP MODE:
Module not in normal operation
mode; reported in background
module check.
Reset board. If problem
persists, check module.
Maintenance
→
Slot
→
Slot Number
→
Reset
7802 SANITY INT NOT
GENERATED:
Applies only to modules with
extension jacks.
Reset board. If problem
persists, check module.
7803 NO PORT BOARDS
AVAILABLE:
Modules not present.
None; delete entry from
transient log.
7804 INVALID SANITY
RESPONSE:
Sanity test received invalid
responses; applies only to
modules with extension jacks.
Reset board. If problem
persists, check module.