Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuhiko Haru0
Yukihiro Shimmura0
Tsutomu Hirao0
Date of Patent
February 22, 2011
Patent Application Number
11956947
Date Filed
December 14, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A service interruption time is shortened in redundancy switching, thereby to render a vocal service of good quality, in addition to a data service of good quality by a server.
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