Title:
通信端末装置
Document Type and Number:
Japanese Patent JP4966972
Kind Code:
B2
Abstract:
A communication terminal apparatus wherein even if there occurs a dropout or overtaking of call control messages, the current service can be continued without increasing the load of an apparatus such as a server in the network. In this apparatus, a VoIP call control part (103) performs call controls including both a call establishment of a VoIP telephone conversation using a wireless LAN system and a call disconnection thereof. A line switching call control part (104) performs call controls including both a call establishment of a line switching telephone conversation using a mobile communication (cellular) system and a call disconnection thereof.; A handover part (105) determines the reception quality of the wireless LAN system and that of the mobile communication (cellular) system and controls, based on the determination results, the handover between the wireless LAN system and the mobile communication (cellular) system.
Inventors:
Mikito Sugiura
Tomoharu Kaneko
Shinkichi Ikeda
Tomoharu Kaneko
Shinkichi Ikeda
Application Number:
JP2008532985A
Publication Date:
July 04, 2012
Filing Date:
September 04, 2006
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04W36/14; H04W36/18; H04W36/30; H04W48/18; H04W88/06
Domestic Patent References:
| JP2005311702A | ||||
| JP2004172882A | ||||
| JP2003235064A |
Attorney, Agent or Firm:
Koichi Washida