EHS36 - T42G - Jabra Pro920

Hi Folks,

I can't hear no sound when i use a Jabra Pro 920 and EHS36 and T42G phone.

Phone Firmware version : 29.80.0.95
EHS 36 Firmware version : 3.16

Connectivity information :
EHS36 module is connected in the EHS port in the phone side and i used the "Y" cable on the other side to connect in the "AUX" port and the "PHONE" port. I linked the RJ11 cable from the headset port on to phone the the handset port un the Jabra module.

Configuration:
When i press both volume bouton on the headset i reach setup and set the "Remote call control" to Auto-Detect because when i set to "DHSG" mode, nothing happen when i click on the headset button.
So, in the "Auto-Detect" mode, the EHS work fine but i can't hear any sound and called can't hear me.

I read docs and can't figure how i can fix this. Someone have an idea ?

Thanks for you help.