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:
Jan. 29, 2013
Filed:
Dec. 26, 2007
Baoguo Xie, Shenzhen, CN;
Shilin You, Shenzhen, CN;
Zhenwu Hao, Shenzhen, CN;
Jiyan Cai, Shenzhen, CN;
Baoguo Xie, Shenzhen, CN;
Shilin You, Shenzhen, CN;
Zhenwu Hao, Shenzhen, CN;
Jiyan Cai, Shenzhen, CN;
ZTE Corporation, , CN;
Abstract
A method for implementing call forwarding on user-determined user busy, including the following steps of: step 1: after receiving a session request routed by a CSCF from a calling side (), an IMS Circuit Switched Control Function (ICCF) on a called side establishing a call with a called terminal having IMS Centralized Service (ICS) capability (), and then the called terminal ringing (); step 2: sending, by the called terminal, a user-determined user busy message to the ICCF when a called user rejects the call (); and step 3: notifying, by the ICCF, a Telecom Application Server (TAS) that the called terminal is in a user-determined user busy state (), and the TAS initiating a procedure of call forwarding on user-determined user busy (). A method for releasing the established media resources resources and session is also provided.