363-206-295
Shelf Descriptions and Configurations
3-2
Issue 1
December 1997
Each shelf is a stand-alone entity with its own fiber cabling and interfaces to
DSX-3, STSX-1, office power, and operations interfaces. Cabling for office alarms,
CIT interfaces, and DS1 timing inputs and outputs can be shared among other
shelves in the bay. The default configuration provides rear access cabling. Front
access through dangler cables is available as an option. Front-access optical
connectors interconnect to fiber optic facilities and facilitate shelf loopback and
fiber tests. The optical connectors are mounted on the OLIU circuit pack faceplate.
The DDM-2000 OC-12 Multiplexers provide Lucent's universal optical connector
on all OLIUs. These OLIUs are designated by a -U. The universal optical
connectors are receptacles on the faceplate of the OLIUs that allow a single OLIU
to support either
ST
, FC-PC, or SC connectors as needed.
A DDM-2000 OC-12 Multiplexer shelf consists of the following:
■
18 circuit pack slots
— 2 four-inch slots
— 9 eight-inch slots
— 7 twelve-inch slots
■
User panel
■
Fully connectorized backplane
■
Front and back covers.
