Cisco Systems MGX 8230 manual T3 Trunk Cabling, Cable Parameter Description, Connector Description

A P P E N D I X B

Cable Specifications

This appendix contains details on the MGX 8230 cabling. It includes the following sections:

•T3 Trunk Cabling

•Frame Relay Cabling

•DC Power Cabling

•AC Power Cabling

•Control and Clock Cabling

•External Alarm Cabling

Note In all cable references, the transmit direction is away from the MGX 8230, and the receive direction is toward the MGX 8230.

T3 Trunk Cabling

A trunk cable connects each T3 port on the BNC-2T3 back card to a T3 port on other equipment. See Table B-1and Table B-2for details.

Table B-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 maximum between the MGX 8230 and other equipment.
	Connector		Terminated in male BNC; Rx is received from trunk, Tx is transmitted to
			trunk.
Table B-2 T3 Connector Pin Assignments
	Connector	Description
	Rx BNC	Receive T3 from trunk
	Tx BNC	Transmit T3 to trunk
			Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001				B-1