ABTO Software offers VoIP SIP SDK for Android that allows building softphone apps for Android-based devices.
The softphone is very easy to use and has a lot of benefits for the end users.
Quick facts about VoIP SIP SDK for Android:
- All Android versions
- Support of SIP and RTP
- STUN and other IETF standards (compatible with SER, OpenSER and Asterisk)
- SIP Registrar (SIP server) support
- Audio and video calls
- Status messages