The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2009
Filed:
Nov. 21, 2003
Masayoshi Son, Tokyo, JP;
Masayoshi Son, Tokyo, JP;
Softbank BB Corp., Tokyo, JP;
Abstract
When a connection request is sent from a telephone terminal, even if it is difficult to set a communication path to the destination telephone terminal only through the packet network, a circuit switching network is also used in cooperation with the packet network in order to set a communication path therethrough, so that call loss is prevented from occurring. In accordance with the communication path setting system of the present invention, when it is determined that an ADSL modemconnected to a VoIP networkis not operating, the MGCsets a communication path between a telephone terminaland a telephone terminalthrough the VoIP network, a public switched telephone networkand a voice band signal processing unitof the ADSL modem. In the same manner, when it is determined that the MGCis not operating, the MGCsets a communication path between the telephone terminaland the telephone terminalthrough the VoIP network, the public switched telephone networkand the voice band signal processing unitof the ADSL modem