We aren't using snom phones, and this is something I would like to push at the PBX level if possible. The first thing was your suggestion - we added the telephone number to the address book, this didn't work for us. I tried different variations and we got the same result. The telephone number in the call logs would remain the same with and without the address book entry. If this is the right place to put it perhaps I am doing it incorrectly, can anyone else try to see if this feature works? If it does, I can use this to solve all my problems.