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B-2
Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Appendix B Cable Specifications
Frame Relay Cabling
Frame Relay Cabling
T1 Cabling
Trunk cables connect the customer DSX-1 cross-connect point or T1 Channel Service Unit (CSU) to the
MGX 8230 at the T1 back card. See to
Figure B-1
and
Table B-3
for details.
Note
Transmit direction is toward the T1 trunk.
Cable Parameter
Description
Cable Type
Western Electric 22 AWG, ABAM individually shielded twisted
pair
(100 ohm balanced). Two pair per T1 line (1 transmit and 1 receive).
Cable Connector
RJ-48C male. (
Figure B-1
illustrates the RJ-48 connector pin out.)
Max. Cable Length
655 ft. (199.664 m) maximum between the MGX 8230 node and the
first repeater or CSU. Selection of cable length equalizers.
Table B-3
RJ-48C T1/E1 Connector Pin Assignments
Pin No.
Description
1
Transmit Tip
2
Transmit Ring
3
Transmit Shield
4
Receive Tip
5
Receive Ring
6
Receive Shield