User`s guide

Configure for Dial-In Modem Access
Chapter 13 Configure Remote Dial-In Access 187
Configure for Dial-In Modem Access
To configure a serial port for a dial-in modem, enter the values for these
fields: Host mode, Modem init string, and Inactivity timeout. To access
the Host mode configuration screen, do the following:
1. Enter the IP address of the Digi Passport unit in the address bar of a
web browser to access the web interface.
2. Select Serial port > Configuration.
3. Under Individual port configuration, select a specific port and then
select Host mode configuration.
4. For the Host mode, select Dial-in modem.
5. Fill in the appropriate fields as needed.
• Modem init string: The modem init string is used for initializing an
external modem attached to the Digi Passport unit’s serial port. The
default modem init string is q1e0s0=2. This default init string sets
the modem to quiet mode, echo off, and Auto Answer on two rings.
See the modem’s user manual for more information.
• Callback: For security reasons, the callback feature can be
activated.
If callback is enabled, the Digi Passport unit does not accept any
incoming calls. After the incoming call is rejected, a callback is initi-
ated to the phone number configured in the “Dial-in modem callback
phone number”.