Method for controlling routing query of IMS user and IMS network

Abstract

The invention discloses a method for controlling the routing query of IMS (IP Multimedia Subsystem) user and an IMS network. The method comprises the following steps: a user signs primary service of operators on MMTel AS, judges whether CIC parameter is added to the configuration number prefix, and judges whether the CIC parameter configured on the SCSCF (Servicing-CSCF) inquires ENUM(Telephone Number Mapping); a fixed network user initiates a call, and the call is triggered to the MMTel AS through the SCSCF; the MMTel AS judges whether to add the CIC parameter according to the prefix of the called number; the calling message is transmitted to the SCSCF; the SCSCF determines whether to inquire ENUM according to whether the CIC parameter is added to calling message, if the configuration is not to inquire the ENUM, the SCSCF directly quits the calling routing out of the IMS area and continues the calling through a traditional fixed network; if the configuration inquires the ENUM, the SCSCF determines the final call continuing router according to the query result of the ENUM. The invention realizes different routing queries according to the different IMS users who access through AGCF (Access Gateway Control Function) and P-CSCF (Proxy-CSCF).

Description

technical field [0001] The invention relates to a method for controlling IMS user routing inquiry and an IMS network. Background technique [0002] In the IMS, different users are accessed from the P-CSCF and AGCF respectively, and the services implemented by these users are different. The users connected by the AGCF need to complete the transformation of the fixed network, so they need to inherit the original PSTN services, and there is no multimedia service, so Routing can be intercommunicated through MGCF and PSTN, inheriting the original PSTN routing principles; while P-CSCF is mainly for users accessing multimedia, and needs to intercommunicate according to IMS standards. In IMS, the function of finding the route is performed by the S-CSCF, which can only find the route according to the called number, and cannot distinguish the source according to the source of the IMS user, that is, the called party cannot be distinguished according to different types of calling IMS us...

AI Technical Summary

Problems solved by technology

In IMS, the function of finding the route is performed by the S-CSCF, which can only find the route according to the called number, and cannot distinguish the source according to the source of the IMS user, that is, the called party cannot be distinguished according to different types of calling IMS users. Analyze the direction of the route

Images