Lucent Technologies DDM-2000 OC-12 User Manual

Issue 1 December 1997 5-1
5
Transmission and
Synchronization Interfaces 5
Overview 5
This section describes the DDM-2000 OC-12 Multiplexer transmission and
synchronization interfaces.
Transmission Interfaces 5
The DDM-2000 OC-12 Multiplexer supports DS3, OC-3, EC-1, and OC-3c low-
speed interfaces and an OC-12 high-speed interface at both 1310 nm and 1550
nm wavelengths. The DDM-2000 OC-12 Multiplexer provides four low-speed
function units (FN). Each can be equipped with:
■ BBG11/BBG11B 3DS3 circuit packs (1x1 protected)
■ BBG12 3STS1E circuit packs (1x1 protected)
■ 21D/21D-U OLIU circuit packs (1+1 or 0x1 protected or STS-3c broadcast
video)
■ 21G/21G-U/21G2-U OLIU circuit packs (1+1 or 0x1 protected or STS-3c
broadcast video).
The 3DS3, 3STS1E, 21D/21D-U OLIU, and 21G/21G-U/21G2-U OLIU circuit
packs can be mixed in any combination across the four function units to provide
for termination/transport of 12 STS-1 signals or 4 concatenated STS-3c (OC-3c)
signals. The DS3 interfaces accept any DSX-3 compatible clear channel signal.

Lucent Technologies DDM-2000 OC-12 Specifications

General

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