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 7778238 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 17, 2010

Filed:

Sep. 27, 2005
Applicants:

Akira Miyajima, Yokohama, JP;

Kazuto Kobayashi, Kawasaki, JP;

Inventors:

Akira Miyajima, Yokohama, JP;

Kazuto Kobayashi, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/56 (2006.01);
U.S. Cl.
CPC ...
Abstract

A source IP telephone apparatus obtains, from an ENUM server, NAPTR records of a call destination based on a telephone number of the call destination, the telephone number being input by dialing. The source IP telephone apparatus then selects, from the obtained NAPTR records, a NAPTR record to be used for transmitting a call, based on a priority order, and transmits a call to the call destination based on an access method and a destination number included in the selected NAPTR record. When a destination IP telephone apparatus is busy, the second priority NAPTR record is selected and another call is made by automatically switching the access method.


Find Patent Forward Citations

Miyajima, Akira. (2010). Ip telephone apparatus (U.S. Patent No. 7778238). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7778238

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