Poly/Plantronics APT-31 EHS for Tenovis Desk Phones #37820-11
Electronic Hook Switch Cable for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter. This cable works with Tenovis desk phones and may work with additional manufacturer’s phones. For CS500 and Savi wireless.
For more information download the EHS Guide here
For complete compatibility info click here