WINFORMS DTMF IVR

Ozeki VoIP SIP .NET SDK allows to develop WinForms DTMF IVR system to build IVR voice menu. It is based on Ozeki SIP SDK that ensures handling multiple lines & calls, DTMF signals, .wav or .mp3 file recording & playing, etc. The softphone can be extended with SIP voice/video calls, developing own softphone, Silverlight/Flash text/voice/video chat programs, supports web-to-web voice and video calls. It works with all PBXs and online VoIP providers