| 摘要 |
<p>The present invention discloses a method and system for implementing virtual roaming and intercommunication in a cellular system, in which voice interception control for selecting a voice channel among different networks and location updating control for localization of roaming can be implemented across PLMNs which are located in different regions, belong to distinctive service providers and have diversified systems. The system comprises several GMSCs that are registered in different PLMNs and act as system accessing devices and a master HLR for implementing centralized management on subscriber data. The master HLR can be further virtualized to multiple HLRs respectively corresponding to each network. All the subscribers who have registered in the network can implement the function of freely roaming and freely selecting long distance transmission mode through being assigned suitable numbers with certain numbering plans in different networks with help of long distance voice channel control function, thereby the long distance fee can be reduced. <IMAGE></p> |
