Interactive Voice Response system IVR Studio

Need the solution to build through the GUI voice services of the different complexity with the following features support:
- intuitively understandable graphical user interface
- sip-inbound, rfs-2833 DTMF support
- caller`s voice prompts record at any stage of the ivr call flow stamping the caller`s ANI, time date of the call
- determine of the caller`s ANI, time, date
- random number generation that can be used in the ivr logic definition.
- speech recognition
- text text-to-speech support

Answer:
Majority of your requirements can be met with Voicent’s IVR Studio, pricing and demo version is available online here: http://voicent.com/ivr.php