Hyper-V Program Manager
This is a bit old – but if you have not seen this already go check out:
The summary is that we have launched Microsoft Mediaroom with virtualization to enable IPTV providers to reduce their costs by consolidating hardware and increasing utilization with Hyper-V.
The neat thing about this – from my point of view – is that it demonstrates that Hyper-V is fully capable of handling such a demanding work load. I also have heard from customers who are running their corporate VoIP servers in Hyper-V quite happily.