[cisco-voip] Multicast conference bridge?

[Robert Kulagowski]

Do any such things exist?  IE, sometimes when we do an "all hands" call, we 
end up using an external service, and that means 90+ ISDN calls!  It seems 
in a "one talker, many listeners" environment, something that could result 
in a multicast audio stream going back to the caller would be pretty 
awesome, and would finally get us over the hump of "why should we bother 
multicast enabling the network?"

If it doesn't exist, is seems like something suited for CUAE perhaps?

The last time I looked at CUAE I got stuck in what seemed to be a huge 
amount of pre-requisites to get it going in our environment.  Something 
like a vmware ready-to-go image would be nice to get some rapid development 
started.