T42G + EHS36 + Plantronics CS540

[JSM Communications]

Hello,
I would like to bump this thread to the top.

We are having the same exact issue with multiple clients.
We are using T42G in 29.73.0.50 firmware together with EHS36 and Plantronics Savi 720.

Everything works fine until you upgrade the phone (T42) to the newer firmware T42-29.80.0.70. After the upgrade its not possible to pickup a call with the headset button.
That renders the device useless ...

Please don't come with a "solution" like: Please, check the 3.5mm DJ jack!
The phone works perfectly, upgrade the phone to new firmware and it doesnt work anymore... you cant blame that on the 3.5mm DC jack.
If you downgrade to the older firmware, then it works perfectly again.

I hope this will be resolved quickly.

Thanks in advance,
Nathan Kestier.