Title:
PROXY SERVER, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2008/020644
Kind Code:
A1
Abstract:
Provided is a proxy server for copying registration information between a plurality
of SIP servers after indicating the validity of a user who makes an access and a
REGISTER request to be transmitted to a SIP server requiring SIP Digest authentication.
In addition to the functions of the ordinary SIP proxy server, the proxy server
arranged between a user agent and the SIP server has a REGISTER request generation
function, so as to generate a REGISTER request for a backup SIP server and transmit
it. Thus, it is possible to realize copying of the registration information,
acquire a user identifier and a password of the proxy server, and perform Digest
authentication between the proxy server and the backup SIP server. Furthermore,
after checking the REGISTER request processing completion response (200 OK)
from the currently used SIP server serving as a copy origin of the registration
information, the proxy server transmits the copied REGISTER request to the backup
SIP server.
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Inventors:
SUZUKI MOTOHIRO (JP)
KAZAMI HIROSHI (JP)
TANIGUCHI KUNIHIRO (JP)
KAZAMI HIROSHI (JP)
TANIGUCHI KUNIHIRO (JP)
Application Number:
PCT/JP2007/066079
Publication Date:
February 21, 2008
Filing Date:
August 14, 2007
Export Citation:
Assignee:
NEC CORP (JP)
SUZUKI MOTOHIRO (JP)
KAZAMI HIROSHI (JP)
TANIGUCHI KUNIHIRO (JP)
SUZUKI MOTOHIRO (JP)
KAZAMI HIROSHI (JP)
TANIGUCHI KUNIHIRO (JP)
International Classes:
H04M3/00; H04L45/586
Foreign References:
| JP2007067670A | 2007-03-15 | |||
| JP2004280738A | 2004-10-07 |
Other References:
SUZUKI M.: "A scale-out design for SIP servers in a carrier VoIP network", IEICE TECHNICAL REPORT, vol. 106, no. 41, 11 May 2006 (2006-05-11), pages 13 - 16, XP003021073
ROSENBERG J. ET AL.: "SIP: Session Initiation Protocol, Request for Comments: 3261 (RFC 3261)", IETF, 30 June 2002 (2002-06-30), XP003021074, Retrieved from the Internet
ROSENBERG J. ET AL.: "SIP: Session Initiation Protocol, Request for Comments: 3261 (RFC 3261)", IETF, 30 June 2002 (2002-06-30), XP003021074, Retrieved from the Internet
Attorney, Agent or Firm:
MATSUMOTO, Masao (Nishi-Ikebukuro 2-chome Toshima-ku, Tokyo 21, JP)
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