User Manual

AS4000 Operations and Maintenance

Section

605-0000-431

. Issue 1.6. Date3/2/99

DLP-006

Page 15 of 44 © Copyright Airspan Communications Corporation 1999

TRIBUTARY UNIT (TU) ALARMS

Alarm Indications

Rack: Major/Prompt

Modem Shelf Alarm Panel: Fault Alarm

Card Alarm: a) TU Fail (TX AIS Output)

b) Not defined

c) RX 2 Mbit/s Fault

d) RX AIS Detected

e) RX Loss of Frame Alignment

f) RX Remote Alarm Detected

g) Not defined

h) RX Loss of Signal

Faults on TU card may bring up multiple fail alarms, check the

alarm indications given in the table.

Fault AIS 2Mbit/s

disconnect

Remote Clock Fail

Alarm

Indications

Fru Fail

Status

2Mbit/s i/p fail

* * *

RX AIS

LOF

* *

REMOTE

Multiframe

Loss of Signal

* *

Consequences

Failure of service for all subscribers connected to the shelf.

TU Fail

Not defined

RX 2Mbit/s Fault

RX AIS Detected

RX Loss of Frame Alignment

RX Remote Alarm Detected

Not defined

RX Loss of Signal