Title:
プロキシ・サーバ、通信システム、通信方法及びプログラム
Document Type and Number:
Japanese Patent JP4336904
Kind Code:
B2
Abstract:
Provided in a proxy server which enables a plurality of SIP servers to copy registration information after presenting, to an SIP server requesting SIP Digest authentication, properness of one who makes an access and of a REGISTER request to be transmitted. With a REGISTER request generation function provided in addition to a function that a common SIP proxy server holds, a proxy server disposed between a user agent and an SIP server generates a REGISTER request to a spare SIP server and transmits the same to the spare SIP server, thereby realizing registration information copying, and holds a user identifier and a password of the proxy server to execute Digest authentication with the spare SIP server. Moreover, after confirming a REGISTER request processing completion response (200 OK) from a working SIP server from which registration information is copied, the proxy server transmits a copied REGISTER request to the spare SIP server.
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Inventors:
Motohiro Suzuki
Hiromi Kazami
Kunihiro Taniguchi
Hiromi Kazami
Kunihiro Taniguchi
Application Number:
JP2008506836A
Publication Date:
September 30, 2009
Filing Date:
August 14, 2007
Export Citation:
Assignee:
NEC
International Classes:
H04M3/00; H04L45/586
Domestic Patent References:
| JP2007067670A | ||||
| JP2004280738A | ||||
| JP2007060210A |
Other References:
鈴木 基広 Motohiro SUZUKI,キャリアVoIP網におけるSIPサーバのスケールアウト方式 A scale-out design for SIP servers in a carrier VoIP network,電子情報通信学会技術研究報告 Vol.106 No.41 IEICE Technical Report,日本,社団法人電子情報通信学会 The Institute of Electronics,Information and Communication Engineers,2006年 5月11日,第106巻,第13~16頁
Attorney, Agent or Firm:
Masao Matsumoto