Title:
SIP COMMUNICATION CONTROLLING APPARATUS
Document Type and Number:
Japanese Patent JP3920788
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve the problems that it is required that media transmission and reception information be reported twice to each of an FW at a private side and that at a global one when an FW function is arranged in front and behind an NAT function, namely at each of the private and global sides, in an NAT/FW apparatus; and throughput is increased.
SOLUTION: An IP address for media transmission and reception obtained by a media transmission and reception information extraction function 101 and a port number and an IP address after being converted by a function for converting the IP address in an SIP message and the port number are retained in an internal database, and the internal database is referred to when the media transmission reception information is reported to the NAT/FW apparatus 20, thus reporting the entirety of information on the IP addresses for media transmission and reception before and after conversion and the port numbers simultaneously.
Inventors:
Junichiro Kuroki
Kazuhito Hayashi
Takaho Shibata
Yuichi Suwa
Kazuhito Hayashi
Takaho Shibata
Yuichi Suwa
Application Number:
JP2003041328A
Publication Date:
May 30, 2007
Filing Date:
February 19, 2003
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04L12/70; H04L12/66; (IPC1-7): H04L12/56; H04L12/66
Domestic Patent References:
| JP2002261788A |
Other References:
後藤雅徳,IP電話をよりIPらしく利用するために ENUM,プレゼンスサービス、MIDCOMの詳細,OPEN DESIGN 2003年3月号,日本,CQ出版株式会社,2003年 1月28日,第10巻 第3号,pp.64-80
林和仁・柴田高穂・諏訪裕一・小幡洋昭・黒木純一郎,SIPアプリケーションレベルゲートウェイ(SIP-ALG)におけるアドレス変換エントリの管理方式に関する一考察,電子情報通信学会技術研究報告 NS2002-188,日本,社団法人電子情報通信学会,2002年12月 9日,Vol.102 No.512,pp.25-28
林和仁・柴田高穂・諏訪裕一・小幡洋昭・黒木純一郎,SIPアプリケーションレベルゲートウェイ(SIP-ALG)におけるアドレス変換エントリの管理方式に関する一考察,電子情報通信学会技術研究報告 NS2002-188,日本,社団法人電子情報通信学会,2002年12月 9日,Vol.102 No.512,pp.25-28
Attorney, Agent or Firm:
Akita Haruki
Keiichi Chino
Keiichi Chino