i want a create a android paid calling app using sinch. sinch includes a callback API to get details of call. i wanted to use this but no idea how to. i read the documentation. but it is not enough
my question is,
- what are the requests to the server.?
- how can i find what to what country the call is going on ?
- how can i restrict calls based on the account balance in our database
Note: i can generate the userid for calling it is a 15 digit string i will use it as username to connect a call