Shameless plug: check out Tropo[1]: you can interface with SIP. One thing to keep in mind regarding speech to text: if you need accuracy, it helps immensely if

Shameless plug: check out Tropo[1]: you can interface with SIP. One thing to keep in mind regarding speech to text: if you need accuracy, it helps immensely if you can guide the recognizer with a list of expected answers. Un-hinted transcription will do its best to recognize words but without AI to understand the context, there are still quite a few possibilities for mis-recognition. More info about these two here[2]. [1] https://www.tropo.com https://www.tropo.com [2] https://www.tropo.com/docs/voice/transcription-vs-speech-recognition-asr https://www.tropo.com/docs/voice/transcription-vs-speech-rec... (Full disclaimer: I'm in the Tropo BU)