Cabletron Systems 3Com Configuring the Originating Modem, Select Originate for Modem Connect Mode

Special Configuration Considerations 51

Configuring PPP/Modem To use a Point-to-Point (PPP) connection, choose the appropriate hardware connection (direct or modem). On the System Configuration page, select PPP for Default Interface.

The PPP interface provides a connection using modems over a telephone line. Connect modems to the APs with straight-through serial cables. Designate one AP as the Originating AP and the other AP as the Answering AP. Configure the Originating AP with dial-out information to the answering AP. The answering AP waits for a dial-in from the originating AP.

The AP supports modems that use the generic Hayes Smartmodem command set The AP uses Hayes commands and is capable of operating with various modems of 19200 baud or faster. 3Com does not support modems the company has not qualified.

The following modems qualify to work with the AP:

■Practical Peripherals PM288MT II V.34

■Supra Fax Modem 288

■US Robotics Sportster Modem 28.8

Configuring the Originating Modem

1Select Configuration-->PPP/Modem. The PPP/Modem Setup page displays.

2Select Enabled for PPP Interface.

3Select PPP for Serial Port Use.

4Select Originate for Modem Connect Mode.

5Select Yes for Modem Connected.

6Select Auto for Dialout Mode.

7Select the appropriate mode for Modem Speaker.

This setting sends a command to the modem to turn the modem speaker on or off. The default is On.

8Type the telephone number (maximum 31 characters) of the answering AP for Dialout Number.

This string follows a typical Hayes Smartmodem ATDT command. Possible characters include pauses, numbers and letters. Refer to your modem documentation for specific information.

9Enter the time in seconds that the AP will wait for a remote connection for Answer Wait Time.

If the AP does not make a remote connection in the amount of time you specify, it will discontinue attempts to make a connection. The default is 60 seconds from a 5- to 255-second range.

10Enter the time in minutes for Inactivity Timeout.

This setting controls the time-out between issuing a PPP packet and the anticipated reply. This is necessary if the serial connection has long delay periods. Zero (0) indicates no time-out. The default is 3 from a 0 to 255-minute range.