Ingenico iCT250 Quick Reference Manual page 36

NOTE: Your terminal is preconfigured with the Magic Box attached.
You can simply plug the power and communication cable(s)
into the Magic Box to start using your terminal.
It is strongly recommended that you attach the Magic Box to
the terminal's work area, in order to reduce stress on the
terminal and connection.
US$Direct iCT250 Connection to Phone Line
The US$Direct iCT250 has an internal dial-up modem which allows
connection to a remote host computer through a standard telephone
cable. For this configuration, you will need an available telephone line,
telephone cable, and modular telephone jack. Be sure to use a
minimum 26 AWG line cord for all telecommunication network wiring.
To connect the US$Direct iCT250 to a telephone line:
1. Plug one end of the telephone cord into the phone port on the
Magic Box
2. Plug the other end of the telephone cord into a telephone jack