■ 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.