"A bandwidth cap limits the transfer of a specified amount of data over a period of time. Internet service providers commonly apply a cap when a channel intended to be shared by many users becomes overloaded, or may be overloaded, by a few users. Implementation of a bandwidth cap is sometimes termed a Fair Access Policy or Usage-based billing." ~Wikipedia
(transoceanic) Fiber Capacity Maxing Out?For more info: Network Access: Capacity
[updated: 04-Oct-2011] [.pdf]