With a business-class symmetric service, why would upload speed degrade more dramatically with route distance than download speed? I am working on a 3Mb "Ethernet Express" service from Cavalier (cavtel.net) originating in D.C. Cavtel's fiber network covers the eastern half of the US. My tested (multiple speed test websites) and actual experience to the CA office is that my upload speed drops to about half my download speed to points on the West Coast. Why does this happen? Shouldn't H.264 devices use the network symmetrically? The type of traffic I'm concerned with is video teleconferencing, VoIP, and corporate VPN between the office on the East and West Coasts.