Ideal for professionalsparticularly VoIP usersthe Vista M22 audio processor delivers precise levels of listening comfort, sophisticated hearing protection, and superior audio performance. The Vista M22 includes Clearline audio to improve call quality in any environment, especially wideband VoIP. The audio processor includes near-universal compatibility with single and multi-line telephones, as well as ergonomically designed volume, headset/handset and mute controls. The Quick Disconnect feature between the audio processor and headset lets you move away from your phone without removing your headset or disconnecting the call. The Vista M22 comes complete with a lightweight 10-foot coil cord for freedom of movement at your desk.