I already make many setups in my 3CX PBX and all is working very well, but there is one thing that I really don't know and is stupid. Sorry it could be really stupid questions but I have two (stupids) questions 1) How I discovery the address of each internal extensions (at the same lan). I know that it is some thing like 192.168.x.x I try one and works, but I think that was only luck (192.168.10.2). I would like to know how to discovery for each that I creat to configure my ATA's 2) How I discovery and or setup the address of my ATA when I am out of this "main" lan. (In my home for example) I read a lot of use VPN use STUN but nothing clear for a common person like me. . I think that I am in correct way, but I am tring to discover the whell and I think that so many people already use it :lol: . I intend to use the Hamachi (logmein) to get the lan connect. But I would like some thing clear to me understand and not hit my head in the wall. If some one has patience to teach me or tell where I found it I will be very happy. Thanks.