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

  • US 8,948,161 B2
  • Filed: 12/01/2011
  • Issued: 02/03/2015
  • Est. Priority Date: 04/06/2000
  • Status: Expired due to Fees
First Claim
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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, andsaid 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.

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