Cisco Systems OL-11497-03 manual GRP Console Port Signals, GRP Auxiliary Port Signals

Chapter 3 Installing the Router

Connecting to the Console and Auxiliary Ports

GRP Console Port Signals

The console port on the GRP requires a straight-through EIA/TIA-232 cable.

Table 3-1lists the signal-to-pin correspondence for the GRP console port.

Table 3-1		GRP Console Port Pin Signals
Pin	Signal		Input/Output	Description
1	GND		–	Ground
2	TxD		Output	Transmit Data
3	RxD		Input	Receive Data
6	DSR		Input	Data Set Ready (always on)
7	GND		–	Ground
8	DCD		Input	Data Carrier Detect (always on)
20	DTR		Output	Data Terminal Ready

GRP Auxiliary Port Signals

The GRP auxiliary port 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 router. The auxiliary port is located next to the console port on the GRP card. The auxiliary port supports hardware flow control and modem control. An example of a modem connection is shown in Figure 3-8. Table 3-2lists the signal-to-pin correspondence for the auxiliary port.

Note To maintain Class B EMI compliance, shielded cables must be used on the console and auxiliary ports of the GRP= and GRP-B=.

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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