Linphone open source library of problem?

            
Linphone currently using open source library for the development of video phone, but found about 1 minute each time a call is automatically cut off, I do not know why the use of the process? Some people say that is the heartbeat of reasons, but there is a Linphone using exosip, exosip this area has been done, but why call almost every twelve minutes or so to automatically disconnect? In the end is what ah? Initial use of the library, check a lot of information and to see the corresponding source code is no prospect of a solution?

Anybody know why?
Pointing pointing that way.
Reply:
Some people encounter the same problem?
Really do not know why.
Reply:
Nobody responded their roof.
Reply:
Is the heartbeat and Option problem.
Has been resolved.
Reply:
You can not do that specific point? Recent turnover in this area are doing