363-206-285
System Introduction
Issue 3 June 2001
1-3
DDM-2000 Product Family 1
The DDM-2000 Product Family includes the DDM-2000 OC-3 Multiplexer, the
DDM-2000 OC-12 Multiplexer, the DDM-2000 FiberReach Multiplexer, and
DDM-Plus. The DDM-2000 OC-3 and OC-12 Multiplexers are designed for loop
(access), interoffice (transport), and customer location applications. They start
with many of the proven features of Lucent's DDM-1000 Multiplexer and extend
into the future with the flexibility of the SONET standard. The DDM-2000 OC-3
Multiplexer operates at 51 Mb/s,155 Mb/s or 622 Mb/s, the DDM-2000 OC-12
Multiplexer operates at 622 Mb/s, and the DDM-2000 FiberReach Multiplexer
operates at 51 Mb/s. These multiplexers provide flexible and evolvable network
solutions. With common operations practices and circuit pack reuse, your
investment (for example, technician training, circuit pack inventory) is preserved
as the network evolves to higher capacities and advanced topologies.
The DDM-Plus provides a cost-effective fiber extension from the DDM-1000 or
DDM-2000 Multiplexers transporting one to four DS1s on a fiber pair, either in a
1x1 protected or unprotected configuration.
The DDM-2000 FiberReach Multiplexer is the newest member of the DDM-2000
product family. The DDM-2000 FiberReach Multiplexer is a full-service access
product, combining a 48-line optical network unit with a complete DS1 interface
product. DDM-2000 FiberReach is a SONET product that is "hosted" by either a
DDM-2000 OC-3 Multiplexer or a
SLC
-2000 Access System. The extension from
the host node is an OC-1 signal in a ring topology. The DDM-2000 FiberReach
Multiplexer operates at 51.84 Mb/s. The DDM-2000 FiberReach Multiplexer can
be used in DDM-Plus applications where increased capacity and interworking
features are needed. See 363-206-300,
DDM-2000 FiberReach Applications,
Planning, and Ordering Guide
, for more information.
The DDM-2000 OC-3 Multiplexer supports many network topologies, such as
point-to-point, OC-3 fiber hubbing, and linear and ring DS1/DS3/EC-1 add/drop
and OC-1, OC-3, and OC-12 rings with time slot interchange (TSI) in a single 8.5
inch high shelf. Each topology is supported with efficiency and a full complement
of operations features. The DDM-2000 OC-3 Multiplexer provides integrated DS1
to OC-12 multiplexing.
The DDM-2000 OC-12 Multiplexer supports several stand-alone topologies,
including point-to-point, hubbing, add/drop, and ring configurations. The
DDM-2000 OC-12 Multiplexer also supports regenerator applications in balanced
and unbalanced modes.
The DDM-2000 Multiplexers are designed for easy installation and operation.
Centralized operations are supported by a full set of single-ended control and
maintenance features. Integrated test capabilities and default provisioning simplify
installation. Most tasks can be performed using a craft interface terminal (CIT) to
give access to sophisticated provisioning, maintenance and reporting features.
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