Lucent Technologies FiberReach DDM-2000 - Page 1418

TAP-107
: Trouble Clearing 363-206-305
Page 12 of 22 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
inc. (from DSX) DS3 LOS CR, MJ,
MN, or
None
At least 128 consecutive zeros were detected in
the DS3 signal received from the DSX-3.
Likely cause:
Equipment failed or removed at
DSX-3, DS3 input disconnected at the DSX-3, or at
the DDM-2000 backplane.
inc. (from DSX) DS3 OOF CR, MJ,
MN, or
None
The system has detected a DS3 out-of-frame
(OOF) condition in the MUX direction (that is,
coming from the DSX) for the specified DS3 signal.
This condition is reported only if the DS3 interface
is provisioned in VM or VMR mode. (See the
set-t3: and rtrv-t3: commands.)
Likely cause:
An out-of-frame DS3 signal
incoming to the DSX-3 at the near end, failure of
the
DS3
circuit pack at the near end, or the DS3
signal is looped at both ends.
inc. (from fiber) DS3 OOF NE ACTY The system has detected a DS3 out-of-frame
(OOF) condition in the DEMUX direction (that is,
coming from the fiber) for the specified DS3 signal.
This condition is reported only if the DS3 interface
is provisioned in VM or VMR mode. (See the
set-t3: and rtrv-t3: commands.)
Likely cause:
An out-of-frame DS3 signal
incoming to the DSX-3 at the far end, failure of the
DS3
circuit pack at the far end or near end, or the
DS3 signal is looped at both ends.
inc. (from DSX) DS3 sig fail CR The bit error ratio (BER) in the incoming DS3 signal
exceeds the provisioned failure threshold, 10
–3
or
10
–6
.
Likely cause:
Failure of the upstream equipment
or facility (towards the DSX-3), cross-talk in office
wiring, or unprotected failure of
DS3
circuit pack.
inc. OC1 FERF NE ACTY The system has detected the OC-1 far end receive
failure (FERF) signal in the incoming OC-1 signal.
Likely cause:
The far end has detected an
incoming signal failure on the specified OC-1 line.
This may be caused by failure of the
OLIU
circuit
pack at the near end, the
OLIU
circuit pack at the
far end, or the transmit cable on the specified line.
inc. OC1 line AIS CR or NE
ACTY
The system has detected the OC-1 line alarm
indication signal (AIS) on an incoming OC-1 line.
Likely cause:
Failure of an
OLIU
circuit pack at the
far end.
Table B – RTRV-ALM Message Descriptions (Continued)
Description
Alarm
Level Meaning