Communication system, control method, information terminal device, network connection device, the relay apparatus, a control program and computer readable recording medium recording it

摘要

PROBLEM TO BE SOLVED: To realize a ubiquitous network connection environment utilizing an existing infrastructure, and to perform charging from a user using the infrastructure and cash back to a maintenance person.;SOLUTION: A transmission side terminal 10 transmits an encapsulated packet including an inclusion packet addressed to a receiving side terminal 103 connected with WAN 102 to a provider 30A. The provider server 30A receives the encapsulated packet transmitted from the transmission side terminal 10 and transmits that encapsulated packet to a crosslink server 40 through the WAN 102. The crosslink server 40 receives the encapsulated packet from the provider server 30A, takes out the inclusion packet from the encapsulated packet and transmits the inclusion packet to the receiving side terminal 103 through the WAN 102.;COPYRIGHT: (C)2005,JPO&NCIPI