363-206-305
System Introduction
1-4
Issue 3 June 2000
feel that matches the DDM-2000 OC-3 and OC-12 Multiplexers. The
DDM-2000 FiberReach Multiplexer fits into the already existing
SONET networks and interworks with the existing OSs. Remote
operations are via the International Standards Organization (ISO)
standard 7-layer open systems interconnection (OSI) protocol, while
a user panel and craft interface terminal (CIT) port support local
operations needs. Complete performance-monitoring features,
including DS1 path performance monitoring, permit the service
provider to verify the quality of service based on key tariffs.
— The HDSL circuit pack (BBF8) provides HDSL interface capability
on the DDM-2000 OC-3 shelf to compatible
PairGain
*
equipment at
the customer premises. It allows the transport of DS1 rate payloads,
for up to 12,000 feet, over two metallic 24 AWG twisted-pair lines.
Application for business customers, the private network, cell sites,
PBXs, customer premises equipment (CPE), and other applications
are supported. The DDM-2000 FiberReach wideband shelf supports
DS1, HDSL (with 28-type OLIUs) and T1 carrier extension
interfaces. The DS1 interface accepts any DSX-1 compatible signal
(clear channel interfaces). When equipped with 28-type OLIUs, the
shelf supports 1 protected or 2 unprotected DS3 interfaces, or a
single OC-3c interface.
â–
Narrowband Shelf
— Which can be used together or separately in a variety of
configurations. The narrowband shelf supports all of the services
that are currently supported by Lucent's
SLC
-2000 Multi-Services
Distant Terminal (MSDT) product but has two times the capacity to
serve customers by requiring a concentration of special services at
a single site. The channel units housed in the narrowband module
are the
SLC
-2000 channel units.
— Which can be used for telephony applications, complete remote
operations, such as channel unit provisioning and integrated testing,
are available through the
SLC
-2000 host. The
SLC
-2000 host also
creates the link into the
5ESS

electronic switch for TR08 or TR303
communications.
Together, the wideband and narrowband shelves can be deployed in outside plant
or customer premises enclosures (including wall mounted) or can be rack-
mounted.
The DDM-2000 FiberReach Multiplexer has a phased release plan. This manual
covers Releases 3.0 and later of the DDM-2000 FiberReach Multiplexer. The
manual will be updated to cover additional releases as they become available.
* PairGain is a registered trademark of PairGain Technologies, Inc.
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