Video on SIP softphone for iPhone

ABTO Software’s new video about VoIP SIP SDK for iPhone provides basic functionality of SIP softphone demo.

You can use our SDK to build your own sip softphone for iPhone. The possibilities of the SDK are not limited by the shown features.

Please proceed to the Download page to try our VoIP SIP SDK for iOS.




Development Environments:

  • Visual C++ / C++ / C# .NET
  • VB.NET / VB 6.0
  • Java
  • JavaScript / HTML / HTML5
  • Flash
  • Borland Delphi

Company details:

ABTO Software is the only owner and distributor of VoIP SIP SDK. The company also develops other products and offers software development services. Read more on