Voicent has a XML gateway for doing this type of thing that I was playing with at one point in the past. Since it is XML based you could write a managed service that could be triggered through Service Broker theoretically.
http://www.voicent.com/gateway.php
I never got far with the project I was working on because it didn't make much sense in the end.
Jonathan Kehayias | Principal Consultant | MCM: SQL Server 2008
My Blog | Twitter | MVP Profile
Training | Consulting | Become a SQLskills Insider
Troubleshooting SQL Server: A Guide for Accidental DBAs[/url]