Try LG Tone 730, LG Tone 750 or LG Tone 760 Bluetooth Headsets with RingCentral's HeadsUpDisplay for Windows - we've been using them since June 2016 throughout our organization without any issues - can answer and hangup from the headset button with no additional software or hub devices. We are successfully running with both Windows 7 Pro and Windows 10 Pro computers.
We already purchased the other units. They have been in use for 2 weeks now and we love the sound and clarity. We are hoping for a solution from RingCentral to be able to use them.
It may have to be a solution from Plantronics... :( Others have reported having the same issue on Voyagers (also a Plantronics headset) wishing you good luck!
Blake Talkmitt
Cecile Glassy, Champion
Blake Talkmitt