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.:
Date of Patent:
Apr. 20, 2004
Filed:
Oct. 27, 1999
Masayuki Tashiro, Kawasaki, JP;
Kazuyuki Ohtsu, Kawasaki, JP;
Noriyuki Fukuyama, Kawasaki, JP;
Masanobu Morinaga, Kawasaki, JP;
Takahiro Shirakawa, Ishikawa, JP;
Kenichi Tonomura, Ishikawa, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An internet telephony system includes a plurality of switching equipment which accommodate a plurality of terminals which can perform at least one of voice communication and data communication, an internet network including a gate keeper, and a plurality of gateways which connect the plurality of switching equipment to the internet network and make it possible to perform communication through the switching equipment and the internet network by communication protocol conversion. In a call transfer operation in which transition from a communication state between a first terminal accommodated with a first switching equipment of the plurality of switching equipment and a second terminal accommodated with a second switching equipment of the plurality of switching equipment to a communication state between a third terminal accommodated with the second switching equipment and the second terminal is performed, the gate keeper checks whether path replacement for setting the call transfer operation is required or not, and the communication between the second terminal and the third terminal after the call transfer operation is provided by a communication path managed by the second switching equipment.