Lucent Technologies DDM-2000 OC-12 User Manual

363-206-295
Transmission and Synchronization Interfaces
Issue 1 December 1997 5-9
Note that for OC-12 OLIU or incoming STS-1 path failure, the STS path switch
takes place in the TSI. For TSI circuit pack failure, the switch occurs in the function
unit OLIUs.
Figure 5-5. OC-12 Ring Shelf with Linear (1+1) OC-3 Low-Speed Interfaces (Receive)
M
B
1
O
L
I
U
M
B
2
O
L
I
U
T
S
I
1
T
S
I
2
FN( )-1
FN( )-2
21 Type
OLIU
21 Type
OLIU
Linear
(1+1) Connection
22-Type OLIU
22-Type OLIU
DDM - 2000 OC-12
Shelf
STS-1 Path Switch
(Switched Together)
TSI CP Switch
(Switched Together)
OC-3
Ring
1
Ring
1
Ring
2
Ring
2
DDM - 2000 OC-3
Shelf
To Function Units

Lucent Technologies DDM-2000 OC-12 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-12
Category	Multiplexer
Language	English