Alcatel-Lucent 9500 MXC User Manual page 749

Additional Information
Bus Facing IF Loopback
Probable Cause
Recommended Actions
TX Power Mute
Probable Cause
Recommended Actions
Additional Information
ATPC Disabled
Probable Cause
3DB 23063 ADAA - Rev 004 July 2007
component failure, check alarms at the remote site.
• Check to see if the communications failure is a both-way or one-way
problem. If both-way, the problem is more likely to be within an NCC/
IDU. If one-way the problem is more likely to be within one of the ODUs
or RAC/Radios at the mux (Tx) or demux (Rx) stages.
The Remote Communications Failure alarm signals that internal communication
between link ends is lost. This communication is carried in the overhead channel,
which also carries NMS, Auxiliary channels and Alarm I/O. The alarm is
triggered from the NCC/IDU.
Bus facing IF loopback is active. This is a warning alarm.
IF Loopback has been selected in the CT System Controls screen.
To remove the alarm, remove the loopback.
Transmitter power amplifier is muted. This is a warning alarm.
Tx mute has been selected in CT System Controls.
To remove the alarm, delete the selection.
Tx mute may be used to mute the online Tx of a protected pair to test the forcing
of a transmitter switch from the remote radio (silent Tx switch command).
The ATPC function has been disabled. This is a warning alarm.
ATPC has been disabled through a CT command in the System Controls screen.
9500 MXC User Manual
Vol. VI-B-23