Cisco Catalyst 2970 - Cable and Adapter Specifications; Two Twisted-Pair Cable Pinouts; Four Twisted-Pair Cable Pinouts for 1000 BASE-T Ports

B-5
Catalyst 2970 Switch Hardware Installation Guide
OL-6422-01
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Cable and Adapter Specifications
These sections describe the cables and adapters used with Catalyst 2970 switches.
Two Twisted-Pair Cable Pinouts
Figure B-4 and Figure B-5 show the schematics of two twisted-pair cables for
connecting to 10BASE-T- and 100BASE-TX-compatible devices.
Figure B-4 Two Twisted-Pair Straight-Through Cable Schematic
Figure B-5 Two Twisted-Pair Crossover Cable Schematic
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports
Figure B-6 and Figure B-7 show the schematics of four twisted-pair cables for
10/100/1000 ports on Catalyst 2970 switches.
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
H5578
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
H5579