Data-over-cellular specialist Novatel Wireless last week unveiled what it claims is the "world's smallest" USB-connected HSUPA modem, a slimline stick that allows a computer to connect to next-gen 3G phone networks. Novatel Wireless Ovation MC950D Novatel's Ovation MC950D: HSUPA by USB The Ovation MC950D looks like a large …
As far as I know, all the current mobile phone operators go as high as 1.2 MBit?
Some NodeB's even in HSDPA networks still only have a single E1 transmission link. The NodeB would require four E1's and and that potential HSDPA bandwidth would be shared by the number of users on that base station. Speculatively it's possible that this bandwidth can be set lower or have vendor specific hardware bottlenecks in the equipment particularly if not upgraded to HSDPA (obviously)