Specifications

Installation and Operation Manual Chapter 1 Introduction
MPW-1 MP-4100 Ver. 2.0 Overview 1-3
The application of Figure 1-2 also permits users connected to MPW-1 Ethernet
ports access to packet switched networks (PSN), for example, Internet or
metropolitan Ethernet networks, via the Megaplex-4100GbE links.
Another application for a Megaplex-4100 equipped with CL.1/GbE modules is
shown in
Figure 1-3 . In the application shown in Figure 1-3 , Megaplex-4100
located at Site B does not have without direct access to the PSN: therefore,
pseudowire traffic generated by MPW-1 modules at site B is directed, by internal
flows within the Megaplex-4100, to ASMi-54C SHDSL.bis I/O modules, which
transport the traffic over SHDSL.bis lines to a DSLAM located at the point-of-
presence (PoP). The PSN provides the connection to the GbE ports of the
Megaplex-4100 at Site A, where MPW-1 modules convert the packetized traffic
back to legacy TDM traffic.
Figure 1-3. MPW-1 Application Using Ethernet over DSL
The applications shown in Figure 1-2 and Figure 1-3 can also be implemented in
Megaplex-4100 with CL.1/155GbE modules. However, CL.1/155GbE modules
support additional capabilities: for example, E1 or T1 traffic received via
STM-1/OC-3 links can be directed to the MPW-1 modules for processing and
transport over PSN.
Another option, illustrated at Site A in
Figure 1-4 , is applicable for Megaplex-4100
connected to STM-1/OC-3 infrastructure, but not to the PSN infrastructure: TDM
services are converted to packet traffic at Site A and transferred over SDH/SONET
using virtual concatenation. The desired bandwidth is specified by configuring a
virtually concatenated group (VCG) using the appropriate type and number of
VCs/VTs, and availability can be enhanced by configuring LCAS. At the desired
location in the SDH/SONET network, the virtually concatenated group is
terminated by a RAD Interface Converter, RICi-155GE, and converted to Ethernet
for transmission over the PSN to Site B, where another Megaplex-4100 with
MPW-1 converts the packetized traffic back to legacy TDM traffic.
Figure 1-4. MPW-1 Application – Legacy and Ethernet Services over SDH/SONET and Packet
Switched Networks