Call realizing method and system
An implementation method and called number technology, applied in the field of communication, can solve the problem that users cannot use roaming communication services accurately, and achieve the effect of improving accuracy and satisfaction.
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[0028] like figure 1 Shown is the network diagram of the international roaming service. To realize international roaming, a physical connection must first be established between the two networks, that is, the home network and the visited network are connected through the international gateway office. The mobile station automatically selects the visited network, establishes a wireless channel, and registers user information in the visitor location register VLR (visitor location register), and then the VLR sends a location update signaling to the home location register HLR (home location register) of the user's home network, and finally HLR notifies VLR to insert subscriber data. In this way, the user realizes the location registration in the visited network.
[0029] In the present invention, the user makes a call in the visited network using the dialing rules of the home network, and the call is triggered to a Service Control Point (SCP). The SCP may be a home network SCP or...
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