The Plantronics APD-80 EHS Cable for CS500 and Savi (Supports OLI) purposely made with an EHS (Electronic Hook Switches) in order to minimize the need for an HL10 handset lifter. It has an uttermost functions which are typically used on grandstream phones. EHS allows you to remotely answer/hang-up and automatically taking calls. This is basically compatible to Grandstream ( GXP 2124, GXP 2200, GXP 2130, GXP 2140, GXP 2160, GXV 3275, GXV 3240 ), Huawei (7910, 7950), Shoretel ( IP655 ) and Verizon/Century Link ( LM416 ), Plantronics ( CS510, CS520, CS530, CS540, SAVI W720, SAVI W730, SAVI W740, SAVI W745 ).
Plantronics APD-80, EHS Adapter Cable Features:
Grandstream Phone models
Plantronics wireless headsets