I need a solution for that will serve as a tunnel for my sip server to avoid voip blockage. Solution will be just like a sip server so my users will connect their Apps. to it while the server or tunnel solution you provide will it take them to my sip server to place the call.
What this means is that my clients App will connect to the tunnel solution while tunnel solution connects to my sip server. therefore your tunnel solution will login credentials similar to that of a sip server This should not result to any loss in voice quality.
Tunnel also should be capable of transcoading any amr codec that enters it to g729
2. Another job is to make my mobile app work via BIS. Please dont mix this with the first job. this will be discussed much later