IPitomy (IP620-BG V3 & IP320 V3) phones are compatible with Plantronics CS500 or W700 series wireless headsets. For remote answer/hangup, you also need IPitomy’s wireless headset adapter (BWM36).
Plug the Plantronics Telephone Interface Cable (included with any Plantronics CS500 or W700 series) into the headset port on the back of the IPitomy phone.
Plug the RJ45-RJ9 cable (included with the phone) into the back of the headset and the BWM36 adapter.
You will now have the ability to answer and hang-up remotely with the IPitomy EHS cable.