User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
2
. Issue 1.6. Date3/2/99
Page 1 of 8 © Copyright Airspan Communications Corporation 1999
SECTION 2:
VIEWING ALARMS USING AS8100 (SITESPAN)
1. Alarm Reports
A fault detected in the AS4000 system will be reported to the Sitespan by the Modem Shelf
Controller Card in the Radio Link Terminal (CT).
All activity is reported as events on the system, alarms are events specific to faults on the
system.
The diagram below shows the paths taken to the Sitespan Server or Site Controller PC by the
events reported from the FRUs.
Combiner Shelf
PSU
RF PA
RF CARD
RF Monitor 2
PSU
DIP/LNA
CRU
RNU PSU
Sitespan Server
or
Site Controller
Analogue
Card
RF Monitor 1
Modem Card
Tributary
Card
Shelf
Controller
Figure 1-1. Event reporting paths from FRUs
To begin the fault finding, it is recommended to place the event/alarm message into the
following categories:
a. FRU Failures
b. Services Related
c. Radio Link Availability
With each messages grouped into one of the above class, you are recommended to resolve the
FRU failure first, and followed by checking the service related events, if these are still present
after the first action has been completed. The FRU failure message is to inform the operator
that the named FRU may be faulty and as a result, it may cause other failure/event to be raised.
In most circumstances, the fault can be rectified by changing the named FRU.
In resolving the service related events, you are recommended to check the 2Mbit/s connection,
ie have these ‘Loss 2MBs Signalling’, and/or ‘2MBs Clock Failure’, and/or ‘ Loss of Frame