Method of realizing number portability announcement application, equipment and system

Abstract

The invention provides a method of realizing number portability announcement application. The method comprises the following steps that a serving call session control function (SCSCF) acquires calling party subscription information; when an initial filtering rule (IFC) of the caller subscription information includes a trigger rule of a number portability announcement application server (NPA AS), the SCSCF sends a calling request to the NPA AS according to the IFC; after the NPA AS receives the calling request, a telephone number mapping (ENUM) server is triggered to execute ENUM query and then a query result is acquired; according to the query result, whether a called party number generates the number portability is determined and a determination result is acquired; when the determination result is that the called party number generates the number portability, the NPA AS sends an announcement application instruction to a media resource function processor (MRFP); the MRFP plays a number portability warning tone to a calling party according to the announcement application instruction. An embodiment of the invention also provides the SCSCF, the NPA AS and a system of realizing the number portability announcement application.

Description

technical field [0001] The invention relates to IP Multimedia Subsystem (IPMultimediaSubsystem, IMS) technology, in particular to a method, device and system for realizing number portability and playback. Background technique [0002] Number portability (Number Portability, NP) means that telecom users still maintain their original telecom service numbers when they move their permanent location or change operators. That is to say, number portability requires that the user number remain unchanged. In some regions, number portability is a mandatory requirement of telecommunications regulation to protect the interests of disadvantaged telecom operators; Reduce user churn. [0003] In the existing IMS network, number portability is mainly implemented in the network element of the call session control function (CallSessionControlFunction, CSCF). The called party number information carrying the information; and then routing the call according to the called party number informati...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned number portability announcement method has relatively large defects: 1) Calling party service information needs to be deployed in NPAAS, and non-NPAAS users cannot provide number portability announcement function; 2) SCSCF routes all calls to NPAAS, to a certain extent The performance processing requirements of SCSCF and NPAAS are added; 3) The routing configuration requirements of SCSCF are relatively complicated, which is not conducive to subsequent operation and maintenance

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