Bridge/Router Installation and Configuration Guide

Chapter 2 Preparing for Installation
GRP Port Connection Guidelines
2-28
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
GRP Console Port Signals
The GRP console port is a DB-25 DCE interface for connecting a DTE terminal
device to the router. Both Data Set Ready (DSR) and Data Carrier Detect (DCD)
signals are active when the router is powered on. The console port does not
support modem control or hardware flow control and requires a straight-through
EIA/TIA-232 cable.
Before you connect a terminal to the console port, check the terminal setting for
the data transmission rate, in bits per second (bps). The terminal transmission rate
setting must match the default rate of the GRP console port, which is 9600
bps.
Set the terminal to these operational values: 9600
bps, 8 data bits, no parity, 2 stop
bits (9600 8N2).
Table 2-3 lists the signals used on the console port.
Ta b l e 2-3 GRP Console Port Signals
Pin Signal Direction Description
1 GND — Shield ground
2 TxD Output Transmit data (from DTE)
3 RxD Input Receive data (to DTE)
6 DSR Input Data set ready (always on)
7 GND — Signal ground
8 DCD Input Data carrier detect (always on)
20 DTR Output Data terminal ready