T46S + EHS40 + Jabra Engage 75: does not work properly

[fburnat]

Hi,

I just received the EHS40 to connect my T46S to my Jabra Engage 75.

The issue is that it does not seem to work properly.

Every time I lift the headset, the Jabra base thinks I'm already starting a call and the only way to answer a call or hang up is on the phone and not through the button of the headset.

I don't know what could be the issue (there's little info on the manual).

The firmware version of my phone is 66.83.0.35

Thanks a lot in advance for your help,
Florian