I just purchased the above mentioned headset. I connected to a Windows 10 PC over the BT600 USB Dongle that comes with the headset. According to both ALU and Plantronics, it should be compatible with the Rainbow softphone. Rainbow seems to recognize the headset with the name "Headset Poly BT600", microphone and speaker work fine.
However, I can't seem to be able to control Rainbow with the headset. Specifically, I can't take or end a call with the designated headset button. I'm not sure what it is I can do from my end to get this to work.
Your help would be appreciated.
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