Patent ID: 7936781

Claim:
A bandwidth control system including a plurality of bandwidth control apparatuses, each of which concentrates a plurality of access lines into a multiplexed line connected to a network and each of which communicates with another bandwidth control apparatus via the network by controlling a bandwidth of the respective access lines accommodated in the respective bandwidth control apparatus, the bandwidth control system comprising: a first bandwidth control apparatus which collects information on downstream bandwidth states of respective access lines accommodated in the first bandwidth control apparatus and notifies, via the network, bandwidth control apparatuses, which are communicating with the first bandwidth control apparatus, of the collected information on the downstream bandwidth states of the respective access lines; and a second bandwidth control apparatus which receives the information on the downstream bandwidth states notified by the first bandwidth control apparatus, allocates upstream bandwidths to respective access lines accommodated in the second bandwidth control apparatus on a basis of the received information on the downstream bandwidth states, and controls the allocated upstream bandwidths of the respective access lines of the second bandwidth control apparatus.