IP telecommunication system, method for controlling communication in IP network, client terminal and client server

Abstract

A network communication system when a call is issued from one of said input / output terminal and said communication terminal, said call control means provided on the side of said server establishes the call connection between said input / output terminal and said communication terminal; and when the call connection between said input / output terminal and said communication terminal is established based upon the call control means on the side of said server, a communication of any one, or both said audio and video information can be performed via said network between said input / output terminal and said communication terminal.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This is a divisional of U.S. application Ser. No. 11 / 352,235, filed Feb. 13, 2006. This application relates to and claims priority from Japanese Patent Application Nos. 2005-035409, filed on Feb. 14, 2005 and 2006-015767, filed on Jan. 25, 2006. The entirety of the contents and subject matter of all of the above is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to an IP telecommunication system, a method for controlling communication in an IP network, a client terminal and a client server, and more particularly, relates to a system wherein a client terminal applied to a thin client system may be used as, for example, an IP phone or a TV phone, and a telecommunication terminal, a telecommunication method and the like.[0003]In recent years, due to the trend of price reduction in personal computers (PCs) and network devices, companies that promote streamlining of their operations by distributin...

AI Technical Summary

Benefits of technology

Enables secure voice and image communication without server bottlenecks, optimizes network traffic, and supports secure use of TC terminals for various functions, including voice and image communication, while preventing personal information leakage.

Problems solved by technology

Performing such maintenance work requires significant management costs that will increase dramatically as the numbers of employees increase.

Several technical challenges exist when realizing IP phone functions with a TC terminal according to the above described TC system.

With a TC terminal, since application programs are executed at the TC server side, the TC terminal side cannot communicate even when a softphone that is a telephone program is executed on the TC server side.

Even if the communication is established, the plurality of softphones virtually running on the TC server remains as a problem, preventing identification of virtual terminals on the TC server through call control under conventional IP address exchange methods.

Therefore, all communications between TC terminals and exterior IP phone terminals were communications via the TC terminal, and terminal-to-terminal communication that characterizes the fundamental operations of IP phones was not achieved.

Furthermore, since the method required TC terminals to exist on the same network segment as the TC server, communications by TC terminals via the outside or wireless LANs were also not achieved.

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