This is a bare-bones Android Studio project implementing baresip based SIP User Agent.
Currently the application supports voice calling and messaging, UDP, TCP, and TLS signaling transports, voicemail Message Waiting Indication, incoming call transfers (REFER), PCMU/PCMA, iLBC, G.726, G.722, G.722.1, AMR, and Opus voice codecs, as well as ZRTP and (DTLS) SRTP media encapsulation.
Motivated by need for a secure SIP user agent for Android that does not depend on third party push notification services.
After cloning the project, generate static libraries and include files to distribution directory using master branch of https://github.com/juha-h/libbaresip-android.
Then in Android Studio 3.5.1:
Open an existing Android Studio project
File -> Invalidate Caches / Restart -> Invalidate & Restart
Copyright (c) 2018 TutPro Inc. Distributed under BSD-3-Clause license.