Integrated information communication system

Abstract

A communication system, for functioning without the use of dedicated lines or the Internet so as to ensure communication speed, communication quality, and communication trouble countermeasures, including a communication network and domain name server. The domain name server includes a domain name tree with a country number of a telephone number as a level 2 domain name of the domain name tree, and the domain name server receives, from a terminal, a telephone number of a destination terminal. Furthermore, based on the telephone number of the destination terminal, the domain name server (i) seeks out, in the domain name tree, an Integrated Information Communication System (ICS) user address of the destination terminal, and (ii) sends the ICS user address to the terminal, such that the communication system receives, from the terminal, the ICS user address as a destination address, and sends the ICS user frame to the destination terminal.

1 . A communication system, wherein:
 said communication system includes a communication network including a domain name server which retrieves an Integrated Information Communication System (ICS) user address based on the whole codes of a telephone number of the international public telecommunication numbering plan,   an origin IP terminal and a destination IP terminal are connected to said communication network,   said telephone number of said destination IP terminal is sent from said origin IP terminal,   said ICS user address of said destination IP terminal is retrieved by said domain name server based on said telephone number of said destination IP terminal, and,   a communication between said origin IP terminal and said destination IP terminal is carried out by using an ICS user frame including said ICS user address of said destination IP terminal via said communication network.