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 terminal, wherein:
 said terminal has a function to input a telephone number of a destination terminal, the telephone number being based on an international telephone number system;   said terminal has a function to send the telephone number based on the international telephone number system to a server; and   said terminal has a function to communicate with the destination terminal using an IP address corresponding to the telephone number.   
     
     
         2 . A communication system with employment of an IP communication network, the communication system comprising:
 terminals connected to the IP communication network; and   a server connected to the IP communication network,   wherein a telephone number of a destination terminal of the terminals is sent to the IP communication network from a source terminal of the terminals, the telephone number being based on an international telephone number system,   wherein according to the telephone number, an IP address corresponding to the telephone number is settled by the server, and   wherein the IP address is used in a communication between the source terminal and the destination terminal.