ABTO Software offers IVR VoIP SIP SDK - customizable
interactive voice response software solution that
supports multiple lines and all features of our VoIP
SIP SDK:

* Support of all versions of Windows OS, including
Windows 8
* Support of SIP, RTP, and SDP
* STUN and other IETF standards (compatible with
SER, OpenSER and Asterisk)
* Encryption mode that accepts secure media
* Support of ActiveX, COM, and plain dll files
* Video support (H.263, H.264)
* Multiple sip accounts registration (NEW)
* Automatic selection of correct network interface
(NEW)
* IVR, presence, voice mail samples (NEW)
* ICE support (NEW)
* SIP Registrar (SIP server) support
* DTMF (Dual Tone Multi Frequency)
* SIP Proxy authentication

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