The foundation of videoconferencing is the call control. How does the global video network operate? How do you get scalability for mass deployment of video conferencing? What are the call policies to transit calls between user groups?
You can also make settings on the use of bandwidth per call and per geographical location - so you get the best use of your corporate network for videoconferencing without compromising your other business critical data.
Cisco Business Edition 6000
Cisco Video Communication Server datasheet.pdf
Polycom Virtualization Manager DMA
or choose for a Cloud Service