Cisco 12406 Installation And Configuration Manual page 121

Chapter 3 Installing the Router
Table 3-2
Pin
1
2
3
4
5
6
7
8
20
22
OL-11497-03
GRP Auxiliary Port Signals
Signal Input/Output
Signal –
Ground
TxD Input
RxD Output
RTS Input
CTS Output
DSR Output
Signal –
Ground
CD Output
DTR Input
RING Output
Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
Connecting to the Console and Auxiliary Ports
Description
Signal Ground
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)
Ring
3-17