Cisco Systems WS-X6608-T1 用户手册
A-1
Cisco Cat alyst 4900M Switch In stal latio n Gui de
78-18350-02
A P P E N D I X
A
Specifications
Revis ed: January 4, 2012
This appendix provides cable and power s upply techn ical specifications fo r the Cataly st 4 900M
switches.
switches.
Console Port
The con sole port is an RJ-45 receptacle. The Requ est to Send (RTS) sign al tracks th e state of the Clear
to Send (CTS) input.
to Send (CTS) input.
lists the con sole po rt pinou ts.
Note
A console cable is not provided in the accessory kit. It can b e ordered as an option.
Table A-1
Console Port Pinouts
Pin
Signal
Direction
Description
1
RTS
o utput
requ est to send
2
DTR
o utput
data terminal ready
3
TXD
o utput
transmit data
4
GND
—
—
5
GND
—
—
6
RXD
in put
receive data
7
DSR
in put
data set read y
8
CTS
in put
clear to send