Specifications

Chapter 6 Troubleshooting and Diagnostics Installation and Operation Manual
6-8 Handling Alarms FCD-E1LC Ver. 1.0
Table 6-2. FCD-E1LC Alarm Messages (Cont.)
Alarm
Number
Terminal Message Description Corrective Actions Severity Type
23
AIS OCCURRED
AIS is being detected on the link Problem at the equipment connected to the remote end of
the link
MAJOR ON/OFF
24
AIS SYNC LOSS
Local loss of frame synchronization
alarm on the main link, caused by AIS
condition
Problem at the equipment connected to the remote end of
the link
MAJOR ON/OFF
25
LOCAL SYNC LOSS
Local loss of frame synchronization
alarm on the main link
1. Check cable connections to the link connector.
2. Check line and/or other communication equipment
providing the link to the remote FCD-E1LC
3. Replace the FCD-E1LC
MAJOR ON/OFF
26
LOCAL MF ALARM
Local loss of multiframe
synchronization alarm on the main link
1. Check that the correct framing mode is used at the
local and remote ends.
2. Perform the corrective actions listed for LOCAL SYNC
LOSS.
MAJOR ON/OFF
27
REMOTE MF ALARM
Remote loss of multiframe
synchronization alarm on the main link
Problem at the remote equipment. MAJOR ON/OFF
28
REMOTE SYNC LOSS
Remote loss of frame synchronization
alarm on the main link
Problem at the remote equipment. Perform the following
checks on the remote equipment:
1. Check cable connections to the link connector.
2. Check line and/or other communication equipment
providing the link to the remote equipment.
3. Replace the equipment.
MAJOR ON/OFF
29
FRAME SLIP
Frame slips are detected on the main
link. Updated once per second.
Note :This alarm message is not
displayed during local loss of frame
synchronization
1. Incorrect selection of master clock source
2. Problem at far end (unstable clock source)
3. Replace the FCD-E1LC only if steps 1 and 2 do not
correct the problem.
MAJOR ON