Inventor
KAJIYAMA HIROMITSU
JP5 patents
Patents
5 patentsUS6961331B2Nov 1, 2005
IP gateway apparatus
FUJITSU LTD15 citations78
US9705903B2Jul 11, 2017
Call control device, call control method, and call control system
FUJITSU LTD0 citations44
US7609692B2Oct 27, 2009
Method and apparatus for controlling route in network
FUJITSU LTD1 citations43
US6567516B1May 20, 2003
Method and device for controlling affiliation of remote line-collection device with switch
FUJITSU LTD0 citations36
US9621599B2Apr 11, 2017
Communication system, communication method, and call control server
FUJITSU LTD0 citations32