Make voice and video call through internet with our application? [closed]

Question

I want to develop voice and video call through our application users in android like Wechat Application. How can i doing this? I have searched in Google but i didn't get any exact reference or samples. Can anyone explain and give some sample source and references for doing this functionality? And I have few confusion about SIP and VOIP which one im going to use for support android versions 2.2 to higher versions applications?

Answer 1

Lumincall is an open source SIP. its under GPL licence so you wont Have to pay for it.

Linphone is an open source Voice Over IP.its also nder GPL licence so you wont Have to pay for it. you can get the source code of these app. it may help you