The Technical Solution Of China’s Number Portability

Number portability is a value-added services of the intelligent telephone network.Userswho want to change a telecommunication service provider can easily handle the business inthe new phone and migration without changing the original telephone number.The significance of the implementation of number portability is obvious. It canimprove the utilization of number resources, enhanced safeguard the telecommunicationsinterests of consumers, improve the efficiency of market competition and reduce the overallcost of services to enhance the operator’s capability of independent innovation anddifferentiated service capabilities.In this article, we introduce an overview of number portability and number portabilitygateway routing technology, the number portability database access technology, a method toset number portability database and the number portability database management systemdesign aspects. This article, we focuses on the first three aspects.Network routing technology introduced the technology of database accessiblity betweenSP and called numbers. We also compare the advantages and disadvantages between them.Database access technology of number portability contains the technologies of signalrelay technology, the intelligent network technology, and highlights of the transformation ofHLR technology. In the end, we introduce how to setup a call using this technology.The configuration of number portability database has two patterns, centralized databaseand distributed database. We do the test and comparation between these two methods.In this paper, we combine the idea of communication technology and the thought ofsoftware engineering in discussing the technical details of number portability. And we comeup with a solution of China’s communications network technology which has a kind ofacademic value and practical significance. Finally, we hope this paper can do something to thedevelopment of China’s number portability technology.