Hello! When i'am trying to call my extension (mobile phonei have voip in my nokia) i cant reach it but if i'am trying to call ext 100 it works but i cant hear anything in my phone. How can i fixed in the easyest way? Because I cant go inside every router and open ports if i'am in another country there it is free wifi. Can i change port on my 3cx server to some open ports like 80 or 25? :S Witch option do I have?