RING GROUPS - Confirm calls problem : caller listens to the operator pressing key 1 to accept

Hi !

I’m actually using a FreePBX with some OVH SIP Trunks (i live in France) for my company.

I wanted to configure “confirm calls” on a “Ring group” but, it seems that when i enable it, the caller can listen to the DTMF tone on the operator (when he press the key 1).

Is there a way to resolve this problem ?

Thanks !