US 7,321,767 B2 | ||
Switching system connecting a radio communication terminal via a LAN line to a public switched network or a leased line | ||
Yousuke Mizutani, Tokyo (Japan); Yasubumi Chimura, Kanagawa (Japan); and Yumiko Araki, Chiba (Japan) | ||
Assigned to Oki Electric Industry Co., Ltd., Tokyo (Japan) | ||
Filed on Dec. 22, 2004, as Appl. No. 11/18,524. | ||
Claims priority of application No. 2003-430527 (JP), filed on Dec. 25, 2003; and application No. 2003-430586 (JP), filed on Dec. 25, 2003. | ||
Prior Publication US 2005/0143063 A1, Jun. 30, 2005 | ||
Int. Cl. H04Q 7/20 (2006.01); H04M 1/00 (2006.01) |
U.S. Cl. 455—426.1 [455/522.1] | 12 Claims |
1. A switching system having a LAN (Local Area Network) line connectable to a radio communication terminal, which effects
radio communication to either one of a public switched network line and a leased network line, for executing call switching,
comprising:
a telephone switching system accommodating the public switched network line and the LAN line for executing the call switching;
and
a terminal adapter for effecting communication to the LAN line when directly connecting the radio communication terminal,
said terminal adapter delivering, while connecting said radio communication terminal, being supplied with electric power from
said radio communication terminal and then detecting the connection of the radio communication terminal, number conversion
information including terminal information stored in the radio communication terminal and an identification number assigned
to said terminal adapter to said telephone switching system, and effecting communication on the LAN line between the radio
communication terminal and said telephone switching system;
said terminal adapter comprising:
a voice controller for executing voice control on a basis of control information for a voice processing system, which is received
from the radio communication terminal, to hold voice communication on the LAN line between the radio communication terminal
and said telephone switching system;
said telephone switching system comprising:
a position information manager for registering, on receiving the number conversion information from said terminal adapter
over the LAN line, the identification number of said terminal adapter and the terminal information of the radio communication
terminal included in said number conversion information in one-to-one correspondence for thereby managing position information
of the radio communication terminal connected to said terminal adapter; and
a switching controller for searching, on receiving a call originated on either one of a telephone terminal accommodated in
said switching system and an accommodated communication terminal having a voice communication function and interconnected
to the LAN line, said position information manager for the terminal information in accordance with a destination number and
substituting, if the terminal information matching with the destination number is present in said position information manager,
the identification number of said terminal adapter matching with the terminal information for the destination number to thereby
control call switching.
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