Plantronics APP-51 Electronic Hook Switch (EHS) Adapter for Polycom 38439-11

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 (most) Polycom desk phones and may work with additional manufacturers, check with The Headset Team for more information and to make sure the APP-51 is compatible with your make and model telephone.. The APP-51 EHS cable replaces the APS-50 cable and features compatibility with the Plantronics On-line Indicator accessory