Technology Research And Realization For Domestic Double MSISDN In Single SIM Card Service

Domestic Double MSISDN in Single SIM Card service provides the fuction that mobile phone users have two MSISDNs using one SIM card while the users do not have to change the SIM card or the mobile phone. While using this service, the users could using anyone of the two numbers to call or send short message to others, so the demand that using different numbers at different times on different occasions could be satisfied.In this paper, According to the analysis and research for China Mobile GSM network environment and the service demand, through lots of research and experiment, the whole technology method and realization flow for Domestic Double MSISDN in Single SIM Card service is completed. The main technology method including: CAMEL technology to achieve voice service, virtual roaming to achieve slave MSISDN short message received, adding a "service access code" prefix to achieve call and short message send identifiableness. Meanwhile this paper invents intelligence service nesting technology to solve the problem that intelligence VPMN service user using intelligence Domestic Double MSISDN in Single SIM Card service.The first chapter of this article introduces the Domestic Double MSISDN in Single SIM Card service concept and the scope of opening up, chapter two mainly expatiate the characteristics of the service, the next chapter detailed explain this service's using method and service process, the network structure and system architecture based on the technology method is introduced in chapter four, chapter five detailed analysis on the achievement of technology method and signaling process. The requirement for the primary equipments and new added equipments is introduced in chapter six. In the last chapter, summarization and prospect about this article is displayed.Using the technology method described in this article, related service needs could be fulfilled while as little as possible under the influence to the network equipments. At present, this technology method has been adopted by relevant test, commercial application could be expected recently.