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Title:
MESSAGE CONVERSION INSTRUMENT AND IP TELEPHONE DEVICE
Document Type and Number:
Japanese Patent JP3873891
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To enable an SIP server to take originator management, performing "originator non-informing transmission" or disguising a user's name representing the identity of an SIP message originator and his/her assigned domain from recipients or malicious third persons, prevent a third person from specifying an IP address attached to an IP telephone, and reduce loss that the message originator may suffer when the IP address is known to the minimum.
SOLUTION: The SIP server converts the SIP message of the originator and manages a conversion table. The IP telephone changes its IP address for each telephonic communication made through IP telephony.


Inventors:
Tatsuhiko Miyata
Kenichi Sakamoto
Minoru Hidaka
Kazuyoshi Hoshino
Satoshi Kiyoto
Kazuma Yumoto
Application Number:
JP2003012987A
Publication Date:
January 31, 2007
Filing Date:
January 22, 2003
Export Citation:
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Assignee:
株式会社日立製作所
International Classes:
H04L12/58; H04M3/00; H04L9/00; H04L29/06; H04M3/42; H04M7/00; (IPC1-7): H04L12/58
Domestic Patent References:
JP2003009231A
JP2004200822A
JP2003198582A
Foreign References:
WO2001054437A1
Other References:
Thomas Narten, Richard Draves,"Privacy Extensions for Stateless Address Autoconfiguration in IPv6",RFC3041,米国,IETF,2001年 1月,URL,http://www.ietf.org/rfc/rfc3041.txt
Jon Peterson,"A Privacy Mechanism for the Session Initiation Protocol (SIP)",RFC 3323,米国,IETF,2002年11月,URL,http://www.ietf.org/rfc/rfc3323.txt
北川和正他,SIP(Session Initiation Protocol)を用いたVoIPサービス提供におけるユーザ認証・正当性確認について,電子情報通信学会技術研究報告 NS2001-141~152 ネットワークシステム,日本,社団法人電子情報通信学会,2001年11月14日,第101巻,第441号,p.25-30
金澤俊之他,IP網におけるマルチメディア通信網構成法の検討,電子情報通信学会技術研究報告 NS2001-48~60 ネットワークシステム,日本,社団法人電子情報通信学会,2001年 6月15日,第101巻,第121号,p.37-42
Attorney, Agent or Firm:
Manabu Inoue