6 position configuration switch, 2 AA batteries, optional AC adapter
- Supports H-Series headsets
- Supports wideband headsets
- Complies with TIA 920 wideband standard
- Clearline Technology
- Call level management
- Noise reduction
- Echo management
- Startle protection
- Supports wideband technology
- Compatible with most standard and VoIP modular phones
- Installs in handset or headset jack
- Includes speaking mute, speaking volume adjust, and listening volume adjust
- Handset/headset switch