I am workin on multiple netmeeting conference using openmcu
(openh323.org projekt) as server running on linux.

At this time every Netmeeting-User can connect to the openmcu, but
they can't see each other, so it is impossible to communicate between
the
Netmeeting-Users itself.

I need at least application sharing+voice working between
Netmeeting-Users. All the data should be routed throu the openmcu
point. So essentially the linux-MCU should act as a Netmeeting hosting
the conference.

I need a really working well-explained solution 
(it must not be an openMCU, but it must be cheep linux-based
solution).