How to setup "auto calling" with HD30L ?

Hi, I've just bought a Snom HD30L and I'm looking to setup the "auto calling" feature. Which means when the phone is taken from its base, the call is automatically started. I found a menu with emergency calling but it doesn't work. A SIP account is connected and working fine. For now we're using the 3 buttons to make calls in the meantime of finding the solution for the auto call feature.

Any help ?

Best regards