US Patent 7778238 IP telephone apparatus

Patent 7778238 was granted and assigned to Panasonic on August, 2010 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Panasonic

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7778238

Patent Inventor Names

Akira Miyajima0

Kazuto Kobayashi0

Date of Patent

August 17, 2010

Patent Application Number

11235156

Date Filed

September 27, 2005

Patent Primary Examiner

‌

Gerald Gauthier

Patent 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.