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. 24, 2007
Filed:
Oct. 03, 2001
Masami Ohta, Fukuoka, JP;
Seiji Tokunaga, Fukuoka, JP;
Masami Ohta, Fukuoka, JP;
Seiji Tokunaga, Fukuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The invention relates to a method of controlling change-over of a connection route between media gateway apparatuses, and a call agent apparatus. During communications, a connection route of deteriorated quality is changed over to a connection route of high quality selected from a plurality of IP networks. Thus, the transmission quality is maintained, and high-quality transmission services are provided at low cost. In a voice/data integrated network having subscribers lines accommodated in STM channel switches LSand LSconnected to an IP network via media gateway apparatuses MGand MGrespectively, the media gateway apparatuses MGand MGcollect/edit real-time packet quality information of IP packets for each call, and post the quality information to a call agent CA. The call agent CA updates packet quality information for each connection route based on the packet quality information, and transmits an instruction, for changing over a connection route of a call at a deteriorated quality level to a connection route of good quality, to the media gateway apparatuses MGand MG