Lucent Technologies DDM-2000 OC-3 User Manual

363-206-285
Maintenance Description
Issue 3 June 2001
9-13
Figure 9-3. Example of Maintenance Signals as a Result of Unprotected Incoming OC-3
Failure
OLIU
8
7
8
9
DS1
CP
DSX-1
fn-c
2
3
MXRVO
DS1 AIS
10
1
Line
FERF
3
10
- OC3 LOS
- OC3 LOF
- Line AIS
- OLIU CP Failure (NE)
- STS-1 LOP
- MXRVO CP Failure (FE)
- DS3 CP Failure (FE)
4
- Any of
- DS3 CP Failure
5
6
- Any of
- DS1 CP Failure (FE)
7
- Any of 6
9
10
- Office Alarms
- LEDs
- Telemetry Outputs
- CIT Initiated Reports
Legend
1
2
- Any of
3
- Incoming DS3 Signal
Failure (FE)
4
6
5
Terminal
DS1
DS3
Terminal
DSX-3
2
Incoming
OC-3 Failure
- LOS
- LOF
- LINE AIS
- LOP
2
3
2
3
fn-a
DS3
fn-b
DDM-2000 OC-3 System RT
DDM-2000 OC-3
CO
10
DDM-2000 OC-3
END RT
OLIUOLIU
OLIU
10
10
10
Main
MainMain
FERF
VT Path AIS
DS3 Yellow
STS-1 Path Yellow
STS-1 Path AIS
VT Path Yellow
Local Indicator
DS1 Yellow
DS3 AIS
2
1
2
10
- Uncross-connected
STS-Path
- Uncross-connected
VT-Path
- STS Sig.
Fail*
- Any of
or STS Sig.
Fail*
2
- Any of
6
- Any of
4
or DS3
LOS, LOF
- Any of
8
or DS1
LOS, LOF
- STS Sig.
Fail*
- VT LOP
* Rings only
LIKELY CAUSES
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Lucent Technologies DDM-2000 OC-3 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-3
Category	Multiplexer
Language	English