Method and system for realizing international roaming callback service

Abstract

The invention discloses a method and a system for realizing international roaming callback service. According to the method, an unstructured supplementary service data (USSD) server queries a user authority database to judge whether a calling terminal has the authority to use the international roaming callback service; if the calling terminal does not have the authority, the USSD server suspends the international roaming callback service; and if the calling terminal has the authority, the USSD server calls the calling terminal back and calls a called terminal, wherein a USSD service authority server transmits international roaming user authority data to the USSD server through a data interface between the USSD service authority server and the USSD server. The method and the system have strong operability, meet the requirement on querying the authority of a calling subscriber while the characteristics of the existing technology, such as business process and networking structure, are not changed, shorten the time delay that the calling subscriber waits for the calling back, improve customer perception, reduce the overhead of a circuit and a signaling link in a system and lower the cost.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and system for realizing international roaming callback service. Background technique [0002] International roaming means that mobile phone users can continue to use mobile phones to communicate on other networks in other countries and regions when they leave their home network. Many operators have launched this service, such as China Telecom. At present, China Telecom has dual-mode card users. When the mobile phone of the dual-mode card user is under the CDMA network of China Telecom, the mobile phone will automatically register to the CDMA network. The mobile phone will be registered to the GSM network, but the user number (China Telecom user number) remains unchanged, and the user's main home network is CDMA. Therefore, when the dual-mode card user's mobile phone is under the GSM network of China Telecom's cooperative operator, the service process of us...

AI Technical Summary

Problems solved by technology

[0016] Therefore, if the calling user and the called user are both China Telecom CtoG international roaming users and roam to the GSM network, when using the international roaming callback (**133) service, the calling MSC and the called MSC are both covered by the USSD The platform is connected to the international circuit through the domestic side of China Telecom. Compared with the original process, the circuit and signaling overhead are relatively large, and, under the existing solution, the USSD service platform has certain CDMA signaling interaction capabilities. There are certain difficulties in implementing network transformation

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