Rai; Rfi - Fujitsu FLM 150 ADM Maintenance And Trouble Clearing

Maintenance and Trouble Clearing
FJTU-320-515-480
3.56

RAI

Table 3-54: RAI (Remote Alarm Indication)—Alarm Event
AID
Direction
Type
T2
TRMT
150 ADM
OC-3/
OC-12
ADDED
SIGNAL
T3
TRMT
150 ADM
OC-3/
OC-12
ADDED
SIGNAL
3.57

RFI

This condition type indicates a remote failure. This alarm has replaced the FERF
and YEL alarms.
Table 3-55: RFI (Remote Failure Indication)—Alarm Event
AID
Direction
Type
EC1
TRMT
150 ADM
OC-3/
OC-12
ADDED
SIGNAL
Issue 9, May 1999
Probable Cause
The tributary equipment has
detected a defective incoming
DS2 (AIS, LOF, or LOS) and
toggles the x-bit on its outgoing
DS2. The toggled x-bit is detected
by the local NE, which triggers
the RAI alarm.
The tributary equipment has
detected a defective incoming
DS3 (AIS, LOF, or LOS) and
toggles the x-bit on its outgoing
DS3. The toggled x-bit is detected
by the local NE, which triggers
the RAI alarm.
The alarm may also be generated
if the ED-T3, XPOL keyword, is
not provisioned.
Probable Cause
RFI detected on an
incoming tributary EC-1
signal. A problem exists on
the EC-1 signal that the
local ADM is sending
toward the FLM 6
equipment.
FNC and FNC Customer Use Only
Suggested Corrective Action
• Verify that the connections from the NE to
the tributary equipment are mechanically
secure.
• Check the outgoing DS2 signal from the
NE to the tributary equipment for the
presence of AIS or framing problems.
• Check for AIS, LOS, and LOF at the NE
where this DS2 originated.
• Verify that the connections from the NE to
the tributary equipment are mechanically
secure.
• Check the outgoing DS3 signal from the
NE to the tributary equipment for the
presence of AIS or framing problems.
• Check for AIS, LOS, and LOF at the NE
where this DS3 originated.
• Verify that the ED-T3, XPOL keyword, is
properly provisioned.
Suggested Corrective Action
• Verify that the outgoing EC-1 coax cable is
installed and connected securely. Perform trouble
analysis procedures as necessary.
• Switch the traffic to the standby MC1A-STS1
unit. If the RFI clears, replace the suspect unit.
Switch the new unit on line and make sure the
RFI does not reappear.
• Check the incoming tributary EC-1 interface
unit.
3.56: RAI
Vol. ll, Page 480.3-34