APV-63 EHS For Avaya Desk Phones #38734-11
Compatible with CS500 & Savi series, MDA200 and Voyager Legend CS wireless headsets. Electronic Hook Switch Cable for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter. Works with Avaya desk phones and may work with additional manufacturers.
For more information download the EHS Guide here
For compatibility info click here