At ITEXPO West in Anaheim last year, I moderated a couple of panels on Open Source software, including one on Open Source in the Service Provider with Alan Percy of Dialogic and Anand Buch of Netsapiens. [see here]

We then did a podcast with the panel because it should have been recorded. You can listen to that here.

At ITEXPO in Fort Lauderdale, we did the panel again with a lot of audience participation. Alan Percy recorded the panel and put it up on Soundcloud. Listen to it here.