Internet Telephony(VoIP) in android

Question

Is it possible to build android app for voice call without any sever. Presently i saw the sample app in android which uses SIP. But that needs a SIP Server. Can we do similar work without the need of any server. I am afraid that if i use any server then the load on the server will increase a lot with increase in number of user. Correct me if i am wrong. Any possible approach to this?

Answer 1

this is not possible since you just won't be able to identify and reach the user you want to call. The server is an interface between two or more users of your app. Increased load? Sure. Consider using a better server configuration when your number of users grows.