Console Port Signals; Auxiliary Port Signals - Cisco 7000 Series Hardware Installation And Maintenance Manual

Console Port Signals

Console Port Signals
The console port on the RP (and RSP7000) is an EIA/TIA-232, DCE, DB-25 receptacle. Both DSR
and DCD are active when the system is running. The RTS signal tracks the state of the CTS input.
The console port does not support modem control or hardware flow control. Table A-1 lists the
signals used on this port. The console port requires a straight-through EIA/TIA-232 cable.
Table A-1
Pin
1
2
3
6
7
8

Auxiliary Port Signals

The auxiliary port on the RP (and RSP7000) is an EIA/TIA-232, DTE, DB-25 plug to which you
attach a CSU/DSU or other equipment in order to access the router from the network.Table A-2 lists
the EIA/TIA-232 signals used on this port.
The auxiliary port supports hardware flow control and modem control.
Table A-2
Pin
2
3
4
5
6
7
8
20
A-2 Cisco 7010 Hardware Installation and Maintenance
Console Port Signals
Signal Direction
GND –
TxD <—
RxD —>
DSR —>
GND –
DCD —>
Auxiliary Port Signals
Signal Direction
TxD —>
RxD <—
RTS —>
CTS <—
DSR <—
Signal Ground –
CD <—
DTR —>
Description
Ground
Transmit Data
Receive Data
Data Set Ready (always on)
Ground
Data Carrier Detect (always on)
Description
Transmit Data
Receive Data
Request To Send (used for hardware flow control)
Clear To Send (used for hardware flow control)
Data Set Ready
Signal Ground
Carrier Detect (used for modem control)
Data Terminal Ready (used for modem control only)