A system and method for realizing the call service based on voice service continuity

A technology of call service and voice service, which is applied in the field of network communication and can solve problems such as call failure
CN100493255CActive Publication Date: 2009-05-27HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2009-05-27

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Abstract

The provided system and method for calling business based on dialogue business continuity comprises: an application server with IMS-NeDS function generates indication message for direct succeeding the calling to the called terminal when determining it requires to transmit the calling from IMS domain to CS domain and succeed to the called terminal, and enables network device in system clear decide whether this calling is anchored in IMS domain. This invention prevents repeated route cycle for calling, and improves calling success ratio.
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Description

Technical field

[0001] The invention relates to the technical field of network communication, in particular to a system and method for realizing call services based on the continuity of voice services. Background technique

[0002] Starting from the 3GPP R5 (3rd Generation Partnership Project, the third generation mobile communication standardization partnership project) stage, the UMTS (Universal Mobile Telecommunications System) core network is divided into CS (Circuit Switched), PS (Packet Switched) and IMS (IP Multimedia Subsystem) ) Three subsystems.

[0003] The CS domain (Circuit Switched Domain, circuit switched domain) is used to provide users with circuit-type service connections. The CS domain mainly includes: MSC (MSC Server / CS-MGW, Mobile Switch CenterServer / CS-Media GateWay, mobile switching center server / circuit domain-media gateway), GMSC (Gateway MSC, gateway mobile switching center) and IWF (InterWorking Function) , Interworking function). Among them, the MSC co...

Claims

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