ABTO VoIP SIP Softphone is based on ABTO VoIP SIP SDK for Android that allows development of custom sip softphones. The application represents most of available functionality of the SDK, but calls are terminated after 1 minute. It is super easy to use and has a lot of benefits for end users.

Features of the demo application:
• Make voice and video calls to most sip clients with or without registration on SIP server (see list of other products on voipsipsdk.com for details);