User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
4
. Issue 1.6. Date3/2/99
DLP-003
Page 5 of 44 © Copyright Airspan Communications Corporation 1999
LOSS OF COMMS WITH SHELF
CONTROLLER
Alarm Indications
AS8100 (Sitespan) ‘Lost Comms With EM’
Rack: Major/Prompt
Modem Shelf Alarm Panel: Fault Alarm
Card Alarm: SC Fail
Probable Cause
Link Faults
a). Loss of connection with Sitespan Server
b). Cable between Modem Shelf and PC/Server faulty
Card Faults
a). Faulty SC Card
b). PC Fault
Consequences
a). If connection is lost between shelf controller and
management system then messages, controls and alarms will not be exchanged
but the AS4000 equipment will functions as normal and service will not be
interrupted.
The SC buffer may overfill and messages will be lost if buffer starts to wrap
around.
b). A PSU failure within the SC Card will not cause any interruptions to service
as the PSU within the AU card will enable the shelf to continue functioning.
Shelf
Controller
SC Fail
Power OK
Red
Amber