Calling service implementing method for voice calling continuous service

Abstract

This invention discloses a realizing method for ending call service in a phone call continuous service including: S402, a service call session control functional entity transmits a session set-up request to a domain selecting functional entity in a phone call continuity application entity, S404, the domain selecting functional entity selects domains according to the request and adds the selection result to the request to forward it to a service call session control functional entity, S406, the control functional entity transmits the request with the domain selection result to other application servers to execute service logic process to get the session set-up request, S408, the control functional entity sends the request to a domain switch functional entity in the continuity entity for session anchoring, S410, the control functional entity receives the request from the domain switch functional entity and forwards it to a phone call continuity user device or a circuit domain network where the user device locates.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for realizing a call termination service in a voice call continuity service. Background technique [0002] With the development of wireless packet technologies such as IP Multimedia Core Network Subsystem (IMS) and Wireless Local Area Network (WLAN), real-time voice transmission can be realized on wireless packet networks such as WLAN, providing circuit Most services on the Circuit Switched Domain (CS for short). [0003] The call continuity service (Voice Call Continuity, referred to as VCC) service can realize seamless switching between voice communication in the CS domain and voice communication based on packet networks such as IMS-based WLAN, and ensure the continuity of voice calls. [0004] VCC business has the following benefits: [0005] (1) Transfer part of the voice calls of the circuit-based wireless communication network to the WLAN, and re...

AI Technical Summary

Problems solved by technology

[0039] However, according to the current VCC terminal call model, the domain selection function is located behind the supplementary service server and the corresponding service trigger point. When the supplementary service server is triggered, the domain selection function of the VCC application has not yet been executed, resulting in the failure to realize the correct triggering process.

[0040] According to the above analysis, it can be seen that the current VCC service termination model and process have defects, and the domain selection function is located behind other application servers reserved in the call path, so that the service trigger points or business logic of these application servers cannot obtain the required services. As a result of domain selection, no business related to these information can be realized

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