Cabling Specifications

This appendix contains pinout information for WS-C1400 Concentrator and adapter ports, the admin. interface port, and the optical bypass switch connector.

CDDI Cabling

Following are the cable considerations for the CDDI ports.

Figure D-1 shows the pinout for the CDDI/MLT-3 concentrator and adapter ports for A, B, M, and S ports.

Figure D-1:

CDDI Concentrator Port Pin Arrangement

Following are pinouts and cabling requirements for CDDI UTP wiring. Table D-1 lists the pinout used for the CDDI/MLT-3 transmit and receive pairs.

The EIA-568 wiring scheme is recommended. Table D-2 lists the EIA 568 RJ-45 wiring scheme.

Figure D-2 shows examples of modular cross-connect cables used for CDDI/MLT-3 connections between various devices using the CDDI-FDDI translator.

Figure D-2:

CDDI/MLT-3 Connections Using Cross-Connect Cable

Admin. Port Cabling

The cabling for the concentrator admin. port must be straight-through, twisted-pair. Each of the four pairs of wires that make up the twisted-pair cable must be individually twisted.

Table D-3 and Table D-4 list the pinouts for the EIA/TIA-232 admin. port.

Table D-4 lists the pinout for a null-modem cable used with the admin. port. Modems are considered to be data communication equipment (DCE).

Optical Bypass Switch Pinout

Figure D-3 shows the pinout and connector for the optical bypass switch. The connector is a standard female DIN type.

Figure D-3:

Optical Bypass Connector