Voicent VoiceXML Gateway 9.0.5 screenshot VoiceXML Gateway for SIP VOIP PSTN TAPI development SDK for interactive telephony apps. High level W3C development platform. Supports text to speech, voice recognition, DTMF tones. Works with SIP based VOIP, Skype, and traditional phone services Download Voicent VoiceXML Gateway 9.0.5