A device and method for enabling mutual calling between auxiliary numbers of single-card-dual-standby subscribers
A single-card dual-standby and mutual calling technology, which is applied in communication supplementary services, electrical components, wireless communication, etc.
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[0026] Such as figure 1 , image 3 and Figure 4 The secondary number mutual calling device of a single-card dual-standby user is shown, which includes a mobile switching center MSC, which is also connected to a media gateway MGW and a single-card dual-standby voice center in turn, and the mobile switching center MSC is also connected through the network They are respectively connected to mobile terminal A and mobile terminal B of the user of the single-card dual-standby service. The single-card dual-standby voice center includes an E1 connection board, a voice server network switch and a firewall connected in sequence, and the network switch is also connected with a voice server. The single-card dual-standby voice center is connected with the network management monitor and the mobile short message interface MSP through the internet network and the telecommunication intranet respectively. The single-card dual-standby voice center is also sequentially connected with a DDF fr...
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