Grp Auxiliary Port Signals - Cisco 12404 Installation And Configuration Manual

Connecting to the Console Port and Auxiliary Ports
GRP Console Port Signals

GRP Auxiliary Port Signals

Cisco 12404 Internet Router Installation and Configuration Guide
3-15
The console port on the GRP requires a straight-through EIA/TIA-232 cable.
Table 3-1 describes the console port pin signals for the GRP.
Table 3-1 GRP Console Port Pin Signals
Pin Signal
1 GND
2 TxD
3 RxD
6 DSR
7 GND
8 DCD
20 DTR
The auxiliary port on the GRP is a DB-25 plug DTE port for connecting a modem
or other DCE device (such as a CSU/DSU or other router) to the Cisco 12404
router.
There are several models of the GRP that can be used with the Cisco 12404 router:
the GRP=, the GRP-B=, and the GRP-C=. In order to maintain Class B EMI
compliance, shielded cables must be used on the console and auxiliary ports of
the GRP= and GRP-B=. The newer GRP-C= does not require shielded cables for
Class B compliance.
Chapter 3
Input/Output Description
– Ground
Output Transmit Data
Input Receive Data
Input Data Set Ready (always on)
– Ground
Input Data Carrier Detect (always on)
Output Data Terminal Ready
Installing the Cisco 12404 Internet Router
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