APD-80 EHS Electronic Hook Switch Cable for Grandstream GXP2124:

Electronic Hook Switches (EHS) communicate electronically with your phone giving your wireless headset answer/end and ring alerts remotely. The use of an EHS cable eliminates the need for an HL10 handset lifter.

Shortel  IP100, IP212K, IP230, IP230G, IP265, IP530, IP560, IP560G, IP565G, 565, 565G, IP420

Allworx IP 9112,  9204,  9212, 9222, 9224 IP Phones

Toshiba IPT2008-SDL, IPT2010-SD, IPT2020-SD, DP5008, DP5018-S, DP5022, DP5022-SD, DP5023-SD, DP5018-S,DP5032, DSP-5118-DP, DP5122-SD, DP5130-SDL, DP5131SDL, DP5132-SD, DPSX22-SD, DPSX32-SD

NEW HP Part#HP85Q58AA