Invention Grant
- Patent Title: IP communication apparatus and NAT type determination method by the same
- Patent Title (中): IP通信设备和NAT类型确定方法
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Application No.: US12104783Application Date: 2008-04-17
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Publication No.: US07801059B2Publication Date: 2010-09-21
- Inventor: Akira Miyajima , Munetaka Washizu , Hirokazu Hayata , Takeshi Suga
- Applicant: Akira Miyajima , Munetaka Washizu , Hirokazu Hayata , Takeshi Suga
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein P.L.C.
- Priority: JP2007-111827 20070420; JP2007-171133 20070628
- Main IPC: H04L12/56
- IPC: H04L12/56
Abstract:
In a NAT type determination method pursuant to RFC 3489, address information added in a binding response from a STUN server in response to a binding request issued in a latest transmission test is compared with address information added in a binding response in response to any transmission test executed therebefore. When the address information are not identical, a NAT type is determined symmetric. Even when a router whose NAT type changes frequently according to a use status is connected, communication is capable without manual setting change by a user.
Public/Granted literature
- US20080259943A1 IP COMMUNICATION APPARATUS AND NAT TYPE DETERMINATION METHOD BY THE SAME Public/Granted day:2008-10-23
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