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:
Dec. 18, 2012
Filed:
Feb. 16, 2007
Youzhu Shi, Shenzhen, CN;
Youzhu Shi, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A method for listening to signal tone from a called party by a calling party during network interworking. When the media gateway control unit receives an Address Complete message or Call Progress message from the circuit domain network, the media gateway control unit instructs a media gateway to open a media stream channel. If the received message carries an indicator indicating the called party is free, the media gateway control unit sends a Ringing response message to the packet core network; if the received message does not carry a indicator indicating the called party is free, the media gateway control unit sends a response message carrying indicator of failed call but successful media stream setup or a response message indicating failed call but successful media stream setup to the packet core network. With the method according to the embodiments of the present invention, the calling party may hear ring-back tone indicating successful call, or signal tone or voice announcement indicating failed call.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile