hi all, how to configure snom m9 with 3cx? I see that it is not officially supported anymore. I have entered the accounts (server, usaname, password) data in the Identity tabs, and selected the prefered codec, but I see that there are mutch more options to configure...in particular, I'd like to use 3CX phonebook, and to transfer calls. What other options do I have to configure? Is there any (un)official guide for snom m9 configuration?