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B-4
Catalyst 3560-C and 2960-C Switch Hardware Installation Guide
OL-23803-02
Appendix B Connector and Cable Specifications
Cables and Adapters
Note When the fiber-optic cable span is less than 15.43 miles (25 km), insert a 5-decibel (dB) or 10-dB inline
optical attenuator between the fiber-optic cable plant and the receiving port on the 1000BASE-ZX SFP
module.
Cable Pinouts
Figure B-5 Two Twisted-Pair Straight-Through Cable Schematic for 10/100 Ports
Figure B-6 Two Twisted-Pair Crossover Cable Schematic for 10/100 Ports
Figure B-7 Four Twisted-Pair Straight-Through Cable Schematic for 1000BASE-T Ports
3. 1000BASE-ZX SFP modules can send data up to 62 miles (100 km) by using dispersion-shifted SMF or low-attenuation SMF; the distance depends on
the fiber quality, the number of splices, and the connectors.
4. A mode-field diameter/cladding diameter = 9 micrometers/125 micrometers.
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
1 TP0+
2 TP0-
3 TP1+
6 TP1-
1 TP0+
2 TP0-
3 TP1+
6 TP1-
Switch Router or PC
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
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