The AT3 with Mute is a Telephone Amplifier for Phone Systems requiring a PJ 327 Plug Prong Interface, such as Avaya, Nortel and Rolm Attendant Consoles.
Features:
Mute
Mute LED indicates when Mute is activated
Full-Range Volume Control
Voice Switching to eliminate background noise
FailSafe Compression to provide constant output level with varying input signals
Field replaceable Headset Cord
90 degree bendable housing