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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
APPENDIX
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Cabling Summary

Introduction
This appendix provides details on the cabling required to install the MGX 8220 shelf.
Note In all cable references, the trans mit d ir ect io n is fr o m th e MG X 82 2 0 sh el f , r ece ive is t o the
MGX 8220 shelf.

T3 Trunk Cabling

Trunk cables connec t th e T3 port on th e BN M ba ckca r d t o th e BNI T3 por t o n th e co loca t ed BPX node .
See Table A-1 and Table A-2 for details.
IMATM T1/E1 Connectors
The IMATM backcard can have eight RJ-48 conn ec to rs or ei g ht S M B co nn ec to rs. Co nnections are
made through short pigtail cab les, tw o ada pte r c able s, a nd t w o Y-cables for use with re dunda nt IMATM
cards. (See Figure A-1.)
TableA-1 Trunk Cables
Cable Parameter Description
Type 75-ohm coax cable (RG-59 B/U for short runs, AT&T 734A for longer
runs). Two per T3 line (XMT and RCV).
Max. Length 450 feet max. between the BPX node and the MGX 8220 shelf.
Connector Terminated in ma le BNC; Rx is r ece ived from trunk, Tx is t ra nsm itte d
to trunk.
TableA-2 T3 Connector Pin Assignments
Connector Description
Rx BNC Receive T3 from trunk
Tx BNC Transmit T3 to trunk