Features6 Call Appearance/Feature Buttons15 Exclusive Feature Buttons2-Line Supertwist DisplayBuilt-In Recorder Interface allows you to connect a recording device for recording all voice interactions2 Headset JacksAdjunct Jack used for connecting compatible adjunct equipment such as an S101A or S201A Speakerphone, a 502A Adapter, or a 500A Headset AdapterOther buttons include: Drop/Test, Conference/Ring, Hold, Transfer, Release, Log in, Mute, Volume Control.Includes RefurbishedLibrary Call Master IV User Guide.pdf
