Cisco Systems 7600 manual Console Port Signals and Pinouts, Identifying a Rollover Cable

Appendix B Cable and Connector Specifications

Console Port Cabling Specifications and Pinouts

The accessories kit that is shipped with your router contains the necessary cable and adapters to connect a terminal or modem to the front-panel console port.

Table B-7	EIA/TIA-232 Transmission Speed Versus Distance
Rate (bps)		Distance (feet)	Distance (meters)
2400		200	60
4800		100	30
9600		50	15
19,200		25	7.6
38,400		12	3.7
56,000		8.6	2.6

Console Port Signals and Pinouts

The Cisco 7600 series router is shipped with an accessories kit that contains the cable and adapters you need to connect a console (an ASCII terminal or PC running terminal emulation software) or modem to the console port on the front panel of the supervisor engine or route switch processor. For information about the signals and pinouts for the Supervisor Engine 2 console port in mode 2, see the “Console Port Mode 2 Signaling and Pinouts (Sup2 Only)” section on page B-10.

The accessories kit includes these items:

•RJ-45-to-RJ-45 rollover cable

•RJ-45-to-DB-9 female DTE adapter (labeled “Terminal”)

•RJ-45-to-DB-25 female DTE adapter (labeled “Terminal”)

•RJ-45-to-DB-25 male DCE adapter (labeled “Modem”)

Identifying a Rollover Cable

You can identify a rollover cable by comparing the two ends of the cable. Holding the cables side-by-side, with the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug. (See Figure B-1.) If you purchased your cable from Cisco Systems, pin 1 is white on one connector, and pin 8 is white on the other (a rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).

Cisco 7600 Series Router Supervisor Engine and Route Switch Processor Guide

OL-10100-04 B-7