User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
3
. Issue 1.6. Date3/2/99
Page 8 of 22 © Copyright Airspan Communications Corporation 1999
2.1.4. Rx AIS
Message: ‘Tributary Unit:AIS’
Source: Exchange, 2Mbit/s connection to the CT modem shelf.
Fault Condition: No data path between the AS4000 and the Switch.
Likely Cause: a. Distant equipment is in alarm state.
Consequential Effect: a. All active calls will be dropped..
b. Call in progress LEDs on the CT modem card will be off
irrespective of the call state.
Repair Actions: The fault is the result of the failure of the preceding transmission
network or exchange and the supervisory systems for these need to
be checked for alarm.