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Appendix D. G.703 Rear Card
Module
D.1 Description
The G.703 Rear Card Module provides IDSL Line Drivers and Rack Cards with an
interface to the G.703 PCM network. With the G.703 Rear Card Module, you can
achieve high-speed G.703 network extension, dedicated high-speed Internet access,
or remote LAN access. Supporting 64-kbps clear channel or 128-kbps octet mode
data streams, the Module can set its own clock or take clocking from the G.703
network.
The Module meets line driver function cards in the mid-plane of the RM260
chassis. G.703 access is via a 120-ohm RJ-45 jack. 2- or 4-wire twisted-pair line
connections are made via a second RJ-45 jack.
The Module features on-board transformer isolation and surge protection as well
as compliance with ITU-T G.823 jitter control specifications.
D.2 Typical Application
The G.703 Module allows a remotely connected LAN or high-speed application to
connect to the 64k/G.703 (PCM) network through a pair of Line Drivers.
Figure D-1 shows a typical application.
Figure D-1. Typical application.
APPENDIX D: G.703 Rear Card Module
LAN
Router
IDSL Line
Driver
G.703 PCM
Network
Managed Micro Rack
with G.703 Card
