Lucent Technologies DDM-2000 OC-3 User Manual

363-206-285
Maintenance Description
9-18 Issue 3 June 2001
Ring Applications 9
Figure 9-7 through Figure 9-9 are examples of the maintenance signals used by
the DDM-2000 OC-3 Multiplexer in VT, VT unequipped, and TMUX circuit pack
path switched ring applications.
Figure 9-7. Maintenance Signaling — VT Ring Application
DDM-2000
VT-Path AIS
Ring 2
DS1
DS1AIS*
STS-Path Yellow
VT-Path Yellow*
Ring 1
LOS
LOF
Line AIS
DDM-2000
VT-Path AIS
Ring 2
DS1
DS1AIS*
STS-Path Yellow
VT-Path Yellow*
Ring 1
STS-LOP
STS Path AIS
STS Sig Fail
DDM-2000
Ring 2
DS1
DS1AIS*
Ring 1
DDM-2000
Ring 2
DS1
Ring 1
VT LOP
FERF
VT-Path Yellow*
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
STS-Path Yellow
VT-Path Yellow
VT-Path Yellow*
VT-Path Yellow*
VT-Path AIS
VT-Path Yellow*
VT-Path AIS
VT-Path Yellow
DDM-2000
VT-Path AIS
Ring 2
STS-Path Yellow
Ring 1
LOS
LOF
Line AIS
DDM-2000
Ring 2
STS-Path Yellow
Ring 1
STS-LOP
STS Path AIS
STS Sig Fail
DDM-2000
Ring 2
Ring 1
DDM-2000
Ring 2
Ring 1
VT LOP
FERF
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
M
A
I
N
1
M
A
I
N
2
STS-Path Yellow
VT-Path Yellow
VT-Path AIS
VT-Path AIS
Line FERF
VT-Path AIS*
VT-Path AIS*
VT-Path AIS*
Line FERF
VT-Path Yellow
VT-Path AIS is sent on pass-through or continue paths only.
VT-Path Yellow on pass-through or continue paths only.
DS1/VT paths selected from the failed ring (Ring 1).
STS Unequipped STS Unequipped
VT Unequipped
§
VT Unequipped
§
§
VT-Path AIS not sent for unequipped.
N is 1 or 3
VT-Path Yellow, DS1 AIS, and VT Path AIS are only sent on
*
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
OC-N ** OC-N **
EC-1/OC-N **
EC-1/OC-N **
EC-1/OC-N **
EC-1/OC-N **
**
VT-Path AIS
VT-Path Yellow

Lucent Technologies DDM-2000 OC-3 Specifications

General

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