Chapter 3 Installing the Cisco 12404 Internet Router
Connecting to the Console Port and Auxiliary Ports
3-19
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
PRP Auxiliary Port Signals
The auxiliary port on the PRP is a DTE, RJ-45 plug for connecting a modem or
other DCE device (such as a CSU/DSU or another router) to the router. The port
is labeled
Aux
, as shown in
. The asynchronous auxiliary port supports
hardware flow control and modem control.
lists the signals used on the
auxiliary port.
Table 3-3
PRP Console Port Signals
Console Port Pin
Signal
Input/Output
Description
1
1
1.
These pins are not connected.
—
—
—
2
DTR
Output
Data Terminal Ready
3
TxD
Output
Transmit Data
4
GND
—
Signal Ground
5
GND
—
Signal Ground
6
RxD
Input
Receive Data
7
DSR
Input
Data Set Ready
8
—
—
—
Table 3-4
PRP Auxiliary Port Signals
Auxiliary Port Pin
Signal
Input/Output Description
1
RTS
Output
Request To Send
2
DTR
Output
Data Terminal Ready
3
TxD
Output
Transmit Data
4
GND
—
Signal Ground
5
GND
—
Signal Ground
6
RxD
Input
Receive Data
7
DSR
Input
Data Set Ready
8
CTS
Input
Clear To Send
todd.book Page 19 Tuesday, November 27, 2007 6:02 PM