363-206-305
Applications
2-60
Issue 3 June 2000
Integrated DS1 Transport Configuration with
SLC
LineReach
Access System
2
The
SLC LineReach
Access System supports DSX-1 electrical interface options
by using the AUA61E LIU. The DSX-1 LIU meets all requirements in the digital
cross-connect specification. The LIU has equalizer switches that provide
equalization to the DSX cross-connect. The maximum separation between the
SLC LineReach
system and DSX cross-connect is 655 feet of 22 gauge cable
(see 915-710-115,
Series 5 Applications Engineering
).
SONET Transport
2
An OC-1 optical ring can serve as a DS1 transport between the switch, INA, or
COT interface and the
SLC LineReach
system. An example of this type of
transport uses the DDM-2000 FiberReach Multiplexer wideband shelves. The
wideband shelves must be hosted by either a DDM-2000 Multiplexer OC-3 shelf or
the SONET subsystem of a
SLC-
2000 Access System to provide single-end
operation of the SONET system (allows for an interface to provide OAM&P
functions).
In this application, an optical multiplexer (either a DDM-2000 OC-3 shelf or a
wideband shelf) accepts DS1 feeders from an integrated LDS or a COT and
multiplexes them onto an OC-1 ring. If using a
SLC
-2000 COT, the COT can
multiplex the analog lines directly onto an OC-1 ring. At the
SLC LineReach
remote terminal location, the wideband shelf demultiplexes the DS1 feeders from
the OC-1 ring and sends them to the
SLC LineReach
system. For this application,
the
SLC LineReach
system must contain AUA61E LIUs.
A single OC-1 ring can support up to 14 Mode 1 (48 lines, 2 DS1s), 28 Mode 1 (24
lines, 1 DS1), or 28 Mode 2 (48 lines, 1DS1)
SLC LineReach
systems. If you need
to support more
SLC LineReach
systems, you can upgrade the OC-1 ring to an
OC-3 ring by changing hardware and, if necessary, software in the SONET
equipment. A single OC-3 ring can support up to 42 Mode1 or 84 Mode 2
SLC
LineReach
systems.
Figure 2-46 shows an integrated application using a SONET OC-1 ring. In this
example, a DDM-2000 Multiplexer OC-3 shelf is collocated with the LDS. The OC-
3 shelf not only multiplexes the DS1 signals (from the DS1 feeders) onto an OC-1
ring, but also hosts the wideband shelves in the ring.
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