Invention Grant
US08289887B2 Late call forwarding method in IP multimedia core network subsystem centralized service
有权
IP多媒体核心网子系统集中式服务中的延迟呼叫转移方法
- Patent Title: Late call forwarding method in IP multimedia core network subsystem centralized service
- Patent Title (中): IP多媒体核心网子系统集中式服务中的延迟呼叫转移方法
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Application No.: US12679739Application Date: 2007-11-29
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Publication No.: US08289887B2Publication Date: 2012-10-16
- Inventor: Zhendong Li , Shilin You , Zhenwu Hao , Zhiming Yu , Jun Wang
- Applicant: Zhendong Li , Shilin You , Zhenwu Hao , Zhiming Yu , Jun Wang
- Applicant Address: CN
- Assignee: ZTE Corporation
- Current Assignee: ZTE Corporation
- Current Assignee Address: CN
- Agency: Brooks Kushman P.C.
- Priority: CN200710162956 20070928
- International Application: PCT/CN2007/003368 WO 20071129
- International Announcement: WO2009/039688 WO 20090402
- Main IPC: H04B7/00
- IPC: H04B7/00 ; H04L12/66 ; G06F15/16

Abstract:
A late call forwarding method in the IMS centralized service. During a call setting up, an ICCF receives a call request from the CSCF serving the called user, called session A, and the ICCF acquires a called user's roaming number and initiates a call to the called user. After receiving the call request, the VMSC serving the called user triggers the late call forwarding service according its determination. A CAMEL service is triggered when the VMSC initiates a call to the forwarding target. The VMSC exchanges messages with the ICCF and informs the ICCE about session associated information and the forwarding reason. When the ICCF determines that the forwarding is needed, it sends a response to the session A does not send the response message, after a telecom application server (TAS) receives the indication, the TAS initiates a regular forwarding service.
Public/Granted literature
- US20100195542A1 LATE CALL FORWARDING METHOD IN IP MULTIMEDIA CORE NETWORK SUBSYSTEM CENTRALIZED SERVICE Public/Granted day:2010-08-05
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