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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9485281 B1

PDFFull Text
Date of Patent:
Nov. 01, 2016

Filed:

Apr. 09, 2014

Communication system and server

Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Shota Nakamura, Kawasaki, JP;

Eri Kawai, Yokohama, JP;

Takuma Utsunomiya, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Nicholas Taylor

Assistant Examiner:

Ho Shiu

Int. Cl.
CPC ...
H04L 12/28 (2006.01); H04L 29/06 (2006.01); H04L 29/12 (2006.01); H04L 9/00 (2006.01); H04W 4/00 (2009.01); H04L 29/08 (2006.01); H04W 80/04 (2009.01); H04W 80/10 (2009.01);
U.S. Cl.
CPC ...
H04L 65/1069 (2013.01); H04L 65/1006 (2013.01); H04L 65/1026 (2013.01); H04L 65/1046 (2013.01); H04L 65/80 (2013.01); H04L 67/14 (2013.01); H04L 29/06 (2013.01); H04L 29/06027 (2013.01); H04L 65/103 (2013.01); H04L 65/104 (2013.01); H04W 80/04 (2013.01); H04W 80/10 (2013.01);
Abstract

A SOAP-SIP adapterestablishes a session with the terminalsandin accordance with a SIP. At this time, the SOAP-SIP adaptersends an INVITE message including its own IP address and port number to the terminalsand. Each terminalsends a 200 OK including its own IP address and port number to the SOAP-SIP adapter. The SOAP-SIP adapterstores correspondingly the IP address and port number of each terminalin a memory. The SOAP-SIP adaptertransfers a media stream received from each terminalto the destination of the corresponding IP address and port number by referring to the memory. Also, a pseudo RBT is sent to the terminal Afrom establishing the session with the terminal Atill establishing the session with the terminal Bto prevent a silent state.

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