Cable And Adapter Specifications; Two Twisted-Pair Cable Pinouts - Cisco WS-C2950T-48-SI Hardware Installation Manual

Cable and Adapter Specifications

Figure B-9
Pin 1
Cable and Adapter Specifications
These sections describe the cables and adapters used with Catalyst 2950 switches.
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Two Twisted-Pair Cable Pinouts

Figure B-10
Figure B-10 Two Twisted-Pair Straight-Through Cable Schematic for 10/100 Ports
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Figure B-11 Two Twisted-Pair Crossover Cable Schematic for 10/100 Ports
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Catalyst 2950 Switch Hardware Installation Guide
B-6
Identifying a Crossover Cable
Pin 1 on one connector and
pin 8 on the other connector
should be the same color.
Two Twisted-Pair Cable Pinouts, page B-6
Four Twisted-Pair Cable Pinouts for 10/100 Ports, page B-7
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports, page B-8
RJ-21 Cable Pinouts, page B-8
and Figure B-11 show the schematics of two twisted-pair cables for 10/100 ports.
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Appendix B
Pin 8
Connectors and Cables
OL-6156-01