Nortel Networks 8004AC Procedure job aid Modem settings, Modem settings Setting Value, Disconnect

Connecting a modem to the switch 87

If you need remote dial-in access to the CLI, you can connect a modem to the CPU module using a serial cable.

Prerequisites

•The Metro Ethernet Routing Switch 8600 supports the AT or Hayes compatible modem.

•You need a DTE-to-DCE cable (straight or transmit cable).

Because the modem port expects to receive Data Set Ready (DSR) and Clear To Send (CTS) signals before transmitting, these control lines are required in the cables.

Procedure steps

Step Action

1Turn on and configure the modem, using the parameters in "Procedure job aid: Modem settings" (page 87).

See the modem documentation for instructions.

2Insert the 9-pin receptacle end of the serial cable into the modem connector on the CPU module.

3Insert the 25-pin plug connector at the other end of the serial cable into the RS-232 data communications port of the modem.

—End—

Procedure job aid: Modem settings

Use the following table to configure the modem.

Modem settings

Setting	Value
Clear to send (CTS) signal	On
Data terminal ready (DTR) signal	The modem only connects if the DTR signal is
	present. If the DTR signal is not present, the
	modem disconnects.
Data carrier detect (DCD) or	On while the carrier is present. The switch
received line signal detection	uses DCD to detect modem connect and
(RLSD)	disconnect.
Data set ready (DSR) signal	On
Ready to send (RTS) signal	Ignored

Nortel Metro Ethernet Routing Switch 8600

Installation — Modules

NN46220-306 02.02 Standard

4.27 July 2008

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