User`s guide

Configure Physical Serial Ports
Chapter 5 Configure Ports 74
Dial-In Terminal Server Mode
Dial-in terminal server mode is a combination of terminal server mode and
dial-in modem mode. In this mode, the Digi Passport unit assumes the serial
port is connected to an external modem and is waiting for a dial-in connection
from a remote site. When dialing in using terminal applications, the Digi
Passport unit accepts the connection as a Telnet or SSH client to a pre-defined
server. This mode is most frequently used to use modems to access servers
on a network.