User guide

A-48 Cisco 2500 Series Access Server User Guide

Modems

Most modems use the setting s0=1 to answer the call after one ring. Refer to your modem

documentation for the settings used with your modem.

Initializing the Modem

Once the modem initialization string has been determined, take the following steps to

conﬁgure the modem. (This example conﬁgures a U.S. Robotics Courier modem on line 1):

Step 1 Reverse Telnet to the modem:

Router#telnet modem1

Trying modem1 (172.16.1.10, 2001)... Open

Step 2 Return the modem to its factory defaults (this step is optional):

at&f

Step 3 Conﬁgure the modem with an initialization string:

at&b1&h1&r2&c1&d3&m4&k1s0=1

Step 4 Store the modem settings in the modem NVRAM:

at&w

Step 5 Suspend and disconnect your Telnet session:

- suspend keystroke -

Router#disc

Closing connection to modem1 [confirm]y

Router#

Timesaver The line conﬁguration command script-reset can automate the conﬁguration

of your modems. See the publication Access and Communication Servers Conﬁguration

Guide, or the section “Tech Tips” on CIO for more information.