Installation guide

A-48
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
Cabling Summary
SCM Cabling
SCM cabling connects the network management ports on the SCM to Cisco WAN Manager (formerly
StrataView Plus) network management computers, control terminals, and modems. This cabling also
provides the connection for an external clock source.
Auxiliary and Control Port Cabling
Table A-46 DC Power Cabling
Piece Standard
Cable You provide a 3-conductor cord. The other end of the power cord should
be a grounding-type attachment. The wire gauge is 10 to 12 AWG or 4 sq.
mm.
Connector At the system end, Cisco provides a pluggable wire block with screw-type
clamping for the three conductors. The customer or installer attaches the
customer-supplied wiring to this block.
Interface: The IGX SCM auxiliary and control ports are configured as an
EIA/TIA-232 DCE port.
Suggested cable: 24 AWG, 25-pair. A straight-through EIA/TIA-232 cable is used for a
terminal or printer connection. A null modem cable (Figure A-4) is needed
when interfacing with modems on either port.
Cable length: 50 ft (15 m) maximum.
Cable connector: DB-25, subminiature, male. Table A-47 contains a list of the port pin
assignments.
Table A-47 Auxiliary and Control Connector Pin Assignments
Pin No. Name Source Description
1 FG both Frame ground
2 TxD DTE Transmit data
3 RxD DCE Receive data
4 RTS DTE Request to send
5 CTS DCE Clear to send
6 DSR DCE Data set ready
7 SG both Signal ground
8 CD DCE Carrier detect
20 DTR DTE Data term ready