Hello,Registration procedure, the main problem is why I do not want to use public SIP servers. I was hoping to create an application in which my user makes a registration once, inside my application. After that, he will have the opportunity to talk with the consultant via the Internet. I do not want to force the user to pre-register on a public SIP server through a browser. I was hoping that the VoIP SIP Saif Sameer project would solve this problem.
You can use it as a public service, by connecting the B4A App/B4J App to the B4J Server.