M22 Features

Plugs into your telephone's handset port Connects directly to any Plantronics H-Series headset Adjusts strong and weak calls to a comfortable level Reduces background noise heard by your caller Headset/handset selector Receive and transmit volume control Supports the enhanced audio from the latest wideband VoIP phones

Telephone Compatibility

The M22 Universal Modular Base Amplifier adds manual headset operation (handset is lifted off-hook to activate headset) to the following telephone models:

Partner MLS, Eurostyle, and Eurstyle Series 2 Merlin Classic 7300 and BIS Merlin Legend MLX Merlin Magix 4400 Definity 6400, 7400, 8400, and 8500 6200, 7100, 8100 Single Line 4600 IP Series 1

The M22 Universal Modular Base Amplifier can also add one-touch headset operation.  This feature can be programmed on the following telephone models:

Merlin Legend MLX Merlin Magix 4400 Definity 6400 4600 IP Series 1