Table 1-1. Transient/Permanent Error Thresholds - AT&T MERLIN LEGEND Communications System Release 2.0 Maintenance And Troubleshooting Manual

Introduction to System Maintenance
NOTE:
As you are checking the error logs, see Table 2-1, "Error Codes," in
Chapter 2 for detailed descriptions of each problem.

Table 1-1. Transient/Permanent Error Thresholds

Error
Code
7402
7403
7404
8403
840B
840C
840D
Step 2b: Trouble Accessing the Error Logs
If you cannot access the error logs, or if the system is inoperable,
troubleshoot the system until the problem is resolved:
1.
Check the power supply LED:
a.
Is the power switch turned on?
b. Is the power cord connected to an AC wall outlet (that is not
controlled by a wall switch)?
If the LED is off and you are sure that the power is connected and
turned on, see "Power Supply Problems" in Chapter 4.
2. If you still cannot access the error logs after checking the power
supply, see "Processor Problems" in Chapter 4.
Maintenance Strategy
1-22
Error
Description
LOOP BIT CONTROL NOT SET
NO LOOP CURRENT
STUCK RINGING
NO EXTERNAL RELEASE
NO LOOP CURRENT
STUCK RINGING
INCORRECT FIRMWARE STATE
Transient/Permanent
Threshold
4
4
2
2
4
2
2