Call is finishing after 60 seconds.

Hello Mr Amin.

I Tested your app, and it works Great!, but it has a problem i couldn't find a solution for,

after making a phone call, it stays connected for only 60 seconds then it automatically hangs up,

have you encountered this problem? if you did, please advice.

NOTE: the server account i am using, i tried it on other client apps on google play and it stayed connected as much as i want, which is more than 60 seconds,

i searched your code, but i couldn't find any counter or condition of this scenario, any suggestion would be appreciated.

Thank you..

based on description in the page below:

google-play-abto

The application represents most of available functionality of the SDK, but calls are terminated after 1 minute.