Title:
通信システム,及び呼制御サーバ
Document Type and Number:
Japanese Patent JP4715521
Kind Code:
B2
Abstract:
When congestion occurs in a RAN in a cell phone VoIP service, calls using the congested device are detected to permit generation of a restriction in call by call units. The congested device notifies call connection data passing through it to a PDSN, the PDSN finds the IP address of the terminal using the target connection, and notifies a CSCF as a restriction target terminal. The CSCF, in call connection processing, determines whether the calling/called sending/receiving user is the restriction target, and if so, determines whether or not the call should be connected with priority from subscriber data.
Inventors:
Kensho Matsumoto
Koji Watanabe
Nakahara Adult
Koji Watanabe
Nakahara Adult
Application Number:
JP2006001993A
Publication Date:
July 06, 2011
Filing Date:
January 10, 2006
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04L12/66; H04L47/80; H04M3/00; H04W28/02; H04W48/06; H04W76/02; H04W80/10
Domestic Patent References:
| JP2005354423A | ||||
| JP2005229591A | ||||
| JP2006503501A |
Attorney, Agent or Firm:
Manabu Inoue