POLY 2200-33206-001 headphone/headset accessory Interface adapter

Headset Interface Adapter

Can be used with SoundStructure C-Series products.
Enables direct audio connection between most business phones and a SoundStructure system via the phone’s headset interface. Use the phone to initiate a call and press the headset button to send the audio to and from the SoundStructure system for in-room audio processing.