Method for limiting illegal international short message service
A short message and message technology, applied in the direction of message/mailbox/notification, subscriber special service, security device, etc., can solve the problem of not being able to actively prohibit illegal short messages
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[0017] Method 1: Intercept all short message services from abroad
[0018] Such as figure 1 As shown, when the short message center issues a short message, it first sends a MAP_SEND_ROUTING_INFO_FOR_SM (routing request) signaling to the called mobile subscriber's home location register to obtain the called mobile subscriber's routing information. If the route information fails to be fetched, it will result in failure to send the short message. Therefore, in order to limit the illegal international short message service and reduce useless signaling messages, the routing signaling message issued by the short message center gateway can be intercepted and discarded, so that the short message cannot be correctly sent to the called party. mobile users.
[0019] This technology is implemented at the SCCP layer of the No. 7 signaling system. For SCCP, the routing message sent from the short message center is an SCCP connectionless message in which the main and called subsystems are...
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