Patent ID: 8098670

Claim:
An xDSL accommodation apparatus comprising: an interface to which each of a plurality of client devices is connected; an exchange switch to exchange content transmitted/received between a content server of a plurality of content servers and a client device of the plurality of client devices; and a cache server to temporarily store content received from the content server of the plurality of content servers through a network, the cache server comprising: a copy/distribution processor to copy and distribute the stored content to the plurality of client devices, one or more address management tables in which addresses of the plurality of content servers are registered, and where the cache server is to multicast-distribute the content from the content server of the plurality of content servers to a client device of the plurality of client devices based on information in the one or more address management tables; and a plurality of cache regions, where the cache server is to statically or dynamically assign a free cache region, of the plurality of free cache regions, to the content received from the content server of the plurality of content servers, and where the cache server is able to dynamically assign the free cache region when a number of the one or more address management tables is larger than a number of cache regions of the plurality of cache regions.