In this project i need to design a network for (SMG) that needs to set up 6 clinics on one WAN, allowing them to share same server for email, talk directly with doctors at other locations, on central network to access client information, they have a data exchange of 1.5MB/second at any given time, the architecture is Windows 2003 with a fiber-optic backbone and gigabyte switches and network cards. Each location has a router and a firewall. i am responsible for providing a high-speed link between the five clinics. The company plans to use extensive video conferencing and large file transfers. what is the best WAN setup?.