Lucent Technologies DDM-2000 OC-3 User Manual

363-206-285
Applications
Issue 3 June 2001
2-9
OC-12PathSwitchedRings 2
The DDM-2000 OC-12 Multiplexer provides STS-1/STS-3c level path protection
switched ring capability. As shown in Figure 2-4, it provides transport of 12 DS3s,
12 EC-1s, 4 OC-3cs, or a mixture with path switching at the STS-1 level (STS-3c
level for OC-3c traffic). Such a ring provides an economical, flexible, and reliable
solution for loop feeder networks.
Figure 2-4. OC-12 Path Switched Ring — STS-1 Level Path Switching
remote terminal
DDM-2000
OC-12
DDM-2000
OC-12
DDM-2000
OC-3
DDM-Plus
DS1, DS3,
EC-1
OC-12
remote terminal
OC-3c
OC-12
remote terminal
DDM-2000
OC-12
DDM-2000
OC-3
DS1, DS3,
EC-1
DDM-Plus
central
office
DDM-2000
OC-12
OC-3c
Switch
OC-12
OC-12
Broadband
Terminal
...
...
EC-1/
DS3
Broadband
EC-1/
DS3
STS-1 TSI

Lucent Technologies DDM-2000 OC-3 Specifications

General

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