2 years ago I wrote a grant to state office of education to get a video conference unit for our school district.  We were awarded a grant that included a Polycom VSX7000, a projector and a cart to keep everything on.  The popularity of this unit has grown in leaps and bounds over the last year and we are now experiencing problems where the system is now double booked.  Most of the calls with this system are done through the Washington State K20 video network that is predominantly based on the H.323 protocol.