how can I call a webservice from voiceXML?

Question

I'm building a very simple voiceXML app to allow people to make recordings. But first, I need to authenticate callers by phone number and/or PIN.

Can I call a webservice from voiceXML? Looks like I want to use the voiceXML "data" element to call my webservice. However, I need to dynamically calculate the URL, and it looks like it only takes a static string as the "src" parameter.

I'm new to voiceXML, so pointing me to a good tutorial would help too! I'm working from the voxeo documentation.

Answer 1

you're right about needing the data element, and i'd have a look at the screxpr attribute of that element.

http://www.vxml.org/frame.jsp?page=data.htm

pretty self-explanatory:

<data srcexpr="'http://example.com/?key=' + myValue" />