Additional features, settings, or issues not covered by specific Microsoft Teams categories
I also have a poly 8220 headset with a base unit on my desktop.
All firmware on headset and base is up to date according to HUB software, Teams is up to date. And no weather I use mute button in Teams or mute button on headset it is the same: mute activated and immediately after mute deactivated.
But is working fine in all other software but not Teams, it is quite a problem due to all the increased numbers of Teams meetings on daily basis.
Has also tried pover off base and headset and disconnect usb cable between PC and base unit.
Solved by exiting HUB software under Teams meetings. THX to JoostDerks.