Patent ID: 7609683

Claim:
A communication system comprising: a plurality of data link activating side apparatuses serving as terminal apparatuses of users who use Internet via a dialup connection; a plurality of data link activated side apparatuses which are connected to said data link activating side apparatuses through a circuit switched network to relay data to be transmitted/received between said data link activating side apparatuses and an Internet Service Provider for the dialup connection to the Internet; and a connection management server apparatus which is arranged for said plurality of data link activated side apparatuses to systematically manage information of logical link resources to be used to connect the Internet via the Internet Service Provider, and which, when one of said data link activating side apparatuses that has previously used one of the logical link resources, but which has subsequently gone into a dormant state, freeing the previously-used logical link resource, newly calls one of said data link activated side apparatuses, performs a logical link search request that provides information that represents a free logical link resource to said data link activated side apparatus that is newly called, the free logical link resource being that which was used before entry into the dormant state.