Title:
内線システム、内線サーバ及び通信方法
Document Type and Number:
Japanese Patent JP5849012
Kind Code:
B2
Abstract:
A private branch exchange system capable of enabling radio communication terminals belonging to an extension group to perform device-to-device direct communication (D2D communication) by using a radio access network such as LTE. A private branch exchange server 300 includes a transition trigger detection unit 310 configured to detect a trigger for a transition to the direct communication, an extension group list retention unit 320 configured to retain an extension group list containing an identifier of the radio communication terminal belonging to the extension group, a subgroup selection unit 330 configured to select a certain subgroup from the extension group list, and a direct communication command unit 340 configured to send permission information on the direct communication and configuration information on a communication environment necessary for the direct communication to the radio communication terminal contained in the subgroup selected by the subgroup selection unit 330.
Inventors:
Shinichi Isobe
Nishida Katsutoshi
Nishida Katsutoshi
Application Number:
JP2012100276A
Publication Date:
January 27, 2016
Filing Date:
April 25, 2012
Export Citation:
Assignee:
Ntt docomo, Inc.
International Classes:
H04W4/20; H04W4/70; H04W76/02; H04W4/08; H04W92/18
Foreign References:
| WO2004032536A2 |
Other References:
古賀 聖司(外3名),FOMA内線接続を実現するオフィスリンクシステムの開発,NTT DOCOMO テクニカルジャーナル,2010年 1月,Vol.17 No.4,pp.31-36
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Ichitaro Ito
Hiroyuki Hashimoto
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Ichitaro Ito
Hiroyuki Hashimoto