T46G + BT40 + Plantronics Voyager Legend issues

[Heisenberg]

Having issues with this set up.

The headset pairs and works for a while, maybe 1 day with a light amount of calls. Eventually though it starts to act up, for example:

- Pressing the answer button will answer the call, but pressing it again does not hang up the call.
- Pressing the mute button will mute the call but pressing it again does not unmute the call as expected.

I just updated to firmware 28.73.0.50 and this certainly improved the situation as previously, the headset used to fail completely and become totally unresponsive. I had to reboot the phone, unpair the phone then repair to get it working again.

This headset is on the Yealink compatibility list, I chose this headset because I wanted something that was fully tested but appears to still have issues. Help !