I would like to know if and how coul dit be possible to contact directly an extension from an axternal line. Example: I have a SIP provider which gives me a geografic numeration. I can make react to this number as many extansions as I want, but I would like to know if it is possible to specify directly which extension I want to make ring. Let's suppose I have assigned the number xxx....it would be nice that when calling xxx101 only the extension 101 would ring, like in a traditional pbx. Thanks for your replies, bye.