Specifications

Watson TDM
Operating Manual
Watson-TDM-Manual-W.doc
Version 2.0-01
8-20
Revision: 2008-02-07
8.3.3 Alarm and Alarm History
ACO ON | OFF
The ACO (Alarm Cut Off) command enables or disables the alarm relays. When
ACO is 'on', all alarms are disabled and the alarm-relays are inactive. The local
alarm LED signals a non-urgent alarm.
ALARM
The ALARM command displays the current alarm status:
LTU_01_FMM> ALARM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Local Alarm Status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LOS-S:off AIS-S:off LOOP1:off ACO:off EXT-LOC:off
LFA-S:off BER-S:off LOOP2:off ALB:off LOOPREG:off
LOSW-A:off BER-A:off SEG-A:off CLD-A:off BERT:off
Alarms:
ACO
Alarm cutoff
AIS-S
AIS (Alarm Indication Signal) detected at subscriber (E1) side
AIS-V3
Alarm indication signal at V3-reference point (PRA mode)
ALB
Analog loopback
BER-x
SHDSL block-error-rate according G.826
≥ 30% on channel x (A,
B, C or D)
BER-S
Excessive Block Error Rate on subscriber side
If CRC4 enabled : BER-S = on if more than 805 CRC4 Errors per
second.
If CRC4 disabled : BER-S = on if more than 28 FAS Errors per
second.
BERT
BER test activated
CLD-x
Current limit detection on channel x (A, B, C or D)
DTR-S
Status of DTR (Data Terminal Ready) Handshake Signal in
V.35/V.36 mode:
DTR Signal is detected as ‘ON’: DTR-S Alarm is off
DTR Signal is detected as ‘OFF’: DTR-S Alarm is on
In X.21 mode the DTR-S alarm depends on the state of Control-
signal C. DTR-S alarm will always be off in X.21 mode if hand-
shake is set to OFF.
EXT-LOC
Loss of external clock
LFA-S
Loss of frame alignment at subscriber (E1) side
LFA-V3
Loss of frame alignment at V3-reference point (PRA mode)