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. 01, 2008
Filed:
Aug. 07, 2003
Satoshi Matsuhashi, Yokohama, JP;
Toshiyuki Matsuda, Yokohama, JP;
Kouichi Shimizu, Chigasaki, JP;
Taro Ogawa, Kamakura, JP;
Satoshi Matsuhashi, Yokohama, JP;
Toshiyuki Matsuda, Yokohama, JP;
Kouichi Shimizu, Chigasaki, JP;
Taro Ogawa, Kamakura, JP;
Hitachi Communication Technologies, Ltd., Tokyo, JP;
Abstract
A telephone applicable to PSTN and IP network having functions of obtaining, when a call is originated by entering a PSTN telephone number, an IP network telephone number of a destination telephone corresponding to the PSTN telephone number from a telephone number translation server connected to the IP network, obtaining IP address information of the destination telephone corresponding to the IP network telephone number from a call agent connected to the IP network, establishing call connection with the destination telephone via the IP network by using the IP address information, and establishing call connection with the destination telephone via the PSTN if the IP network telephone number of the destination telephone cannot be obtained from the telephone number translation server.