The Definity Callmaster III has five Call Appearance/Feature Buttons, 15 Exclusive Feature Buttons, a 2-Line Supertwist Display and 2 Headset Jacks.

The Callmaster III has an Adjunct Jack used for connecting compatible adjunct equipment such as an S101A or S201A Speakerphone, a 507A Adapter, or a 500A Headset Adapter.

The Callmaster 3 has Drop/Test, Conference/Ring, Hold, Transfer, Release, Log in, Mute and Volume Control buttons.

2 Year Warranty