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:
Jan. 27, 2009
Filed:
Jul. 15, 2005
Yuichiro Chikamatsu, Kawasaki, JP;
Yuichiro Chikamatsu, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An edge switch comprises a token bucket control unit which varies the amount of tokens flowing into a token bucket per unit time in accordance with the congestion condition of an IP network, and the output rate of packets to be output onto a packet communication network is adjusted for each line identifier by controlling the output amount of a packet buffer, in accordance with the amount of tokens held in the token bucket; and, an analyzing unit that determines whether the source address of the received packet matches the address of a preregistered emergency call destination, and the token bucket control unit further reduces, when an emergency call is generated, the amount of tokens flowing into the token bucket for any destination address in congestion, other than the emergency call destination, and thereby retaining communication quality for emergency priority communication.