Cisco Systems 7600 manual Fiber-Optic Connectors, SC Connectors, LC Connectors, page B-14, B-12

Appendix B Cable and Connector Specifications

Fiber-Optic Connectors

Table B-13		1000BASE-T Crossover Cable Pinout (MDI-X)
Side 1 Pin (Signal)			Side 2 Pin (Signal)
1	(TP0+)		3	(TP1+)
2	(TP0–)		6	(TP1–)
3	(TP1+)		1	(TP0+)
6	(TP1–)		2	(TP1–)
4	(TP2+)		7	(TP3+)
5	(TP2–)		8	(TP3–)
7	(TP3+)		4	(TP2+)
8	(TP3–)		5	(TP2–)

Figure B-4

Switch

1TPO+

2TPO-

3TP1+

6TP1-

4TP2+

5TP2-

7TP3+

8TP3-

Twisted-Pair Crossover 1000BASE-T Cable Schematic

Switch

1 TP0+

2 TP0-

3 TP1+

6 TP1-

4	TP2+
5	TP2-
7	TP3+	65274
8	TP3-

Fiber-Optic Connectors

This section describes the SC, MT-RJ, and LC fiber-optic connectors and provides instructions for cleaning the fiber-optics connectors. It contains the following sections:

•SC Connectors, page B-12

•MT-RJ Connectors, page B-13

•LC Connectors, page B-14

•Cleaning the Fiber-Optic Connectors, page B-15

SC Connectors

Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

The SC single-mode fiber connector is used to connect fiber-optic module ports with the external network. (See Figure B-5.)

	Cisco 7600 Series Router Supervisor Engine and Route Switch Processor Guide
B-12	OL-10100-04