Router Installation Guide

Chapter 2 Preparing for Installation
PRP Port Connection Guidelines
2-24
Cisco XR 12410 Router Installation Guide
OL-13832-01
PRP Auxiliary Port Signals
The PRP auxiliary port is a DTE, RJ-45 interface for connecting a modem or other
DCE device (such as a CSU/DSU or another router) to the PRP. The auxiliary port
supports hardware flow control and modem control.
Table 2-2 lists the signals used on the auxiliary port.
Ta b l e 2-2 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