The Design And Implemention Of Domestic Multi-MSISDN In Single SIM Card

Domestic Multi-MSISDN in Single SIM Card service means customers have multi-numbers with only one SIM card under no change of phone and SIM card's condition. Multi-numbers include one main number and several sub numbers. User can choose anyone of them to have SMS and voice calling and called, realizing user's desire that is using different numbers under different conditions, one card with multi numbers. Predicted under statistics, with sustained growth of user's need for multi-number use, Multi-MSISDN in Single SIM Card service will have bright market prospect in the future.The principles and disadvantages of the common multi-SIM services are analyzed at first, and then Domestic Multi-MSISDN in Single SIM Card's features are introduced.The multi-SIM card solution based on access code and Intelligent Network application is presented. The specific service procedures are described, and the characteristics of the solution are analyzed.On this base, the author compares this solution with other ones, and discusses some key technology in the realization detailly, including the realization of the virtual roaming platform and SMS Agent supporting CMPP protocol coding and decoding and SP, last describes implemention of the service logic.Finally the paper discusses the functions test and performance test of the service, and outlooks the future jobs for improvement.