Terminal-to-terminal communication connection control method using IP transfer network

摘要

The present invention is the communication system that the communication connection control between the terminals is performed, in the IP transfer network forming the closed network, by using the IP communication record. Further, the present invention relates to the communication system to perform the communication connection control between the terminals by obtaining the IP address of the server which manages the communication connection control of the destination terminal based on the telephone number or the host name of the destination terminal.

主权项

1. A communication system, wherein:
said communication system includes a communication network, a server S1 and a server S2 are connected to said communication network, a communication inside said communication network, is carried out by using IP packet, a terminal T1 and a terminal T2 are connected to said communication network, said server S1 receives a telephone number or a host name of said terminal T2, an IP address of said server S2 is retrieved based on said telephone number or said host name of said terminal T2, a data concerned with a control of a communication between said terminal T1 and said terminal T2, is sent from said server S2 to said terminal T2, said control of said communication between said terminal T1 and said terminal T2, is carried out via said server S1 and said server S2, said control of said communication between said terminal T1 and said terminal T2, includes a control of a call progress, and said communication between said terminal T1 and said terminal T2 by using IP packet, is carried out via said communication network and is not carried out via said server S1 and said server S2.