User`s guide

Chapter 3 Configuration 29
profile use the Help button in the upper right corner on the profile
page of the web interface.
• Internal Modem
The Internal Modem profile (not listed in the graphic) is specific to
the PortServer TS 1/3 M MEI devices. The fully functioning modem
is embedded in port one and uses the standard AT command set.
See the Documentation on the Digi CD for the complete AT
Command Reference.
Modem Emulation
Modem Emulation allows you to configure the serial port to act as a
modem. The Digi device emulates modem responses to a serial device
and seamlessly sends and receives data over an Ethernet network instead
of a PSTN (Public Switched Telephone Network). The advantage for a user
is the ability to retain legacy software applications without modification and
use a less expensive Ethernet network in place of public telephone lines.
Modem
Modem allows you to attach modem devices to the serial port in order to
establish or receive connections from other systems and modems.
Note: Select Enable PPP Connections on this Modem and click the PPP
Configuration link to set up incoming, outgoing or advanced PPP settings if
the attached modem uses PPP connections. See "System Configuration" on