■ Features

• Incorporates all the functions required of a hands-free

telephone.

• Incorporates all the functions required of a handset.

• Complies with AC and DC impedance requirements.

• Provides a wide dynamic range.

• A noise detecting circuit prevents inadvertent transmission.

• Operation on an external power supply is available.

• Each mode can be easily controlled.

• A built-in loudspeaker amplifier can operated either on

line voltage or an external power supply.