Based J2ee Telecom Billing System

As the kernel of the support system of telecommunication, the accuracy of billing system has a close relation to both service quantities for customers and income of telecommunication enterprises. With the development of market competition of telecommunication, billing system has been one of the core competitiveness of operation enterprises.Comparatively, current billing system of telecommunication enterprises can not fit the requirement of market at present. How to build a billing system which satisfies the demanding of the fast changed business and be coincidence with trend of technology has been not only the great challenge to the enterprises, but also the technical subject of Information Industry.As a technical architecture which has apparent differences to the traditional development, J2EE contain lots of components, in order to simplify and standard the development and deployment of applications, finally, improve the transplantation,security and reuse value. The kernel of J2EE has a group of technical standard and guideline, all components,service configuration and technologies in which have the same scale and specification, in order to make great compatibility between the platforms follow J2EE architechture.As a result, the communication problem caused by the incompatibility of information products used by enterprises can be resolved easily.Design patterns are known as a classified collection of design experience in software development. It is used in order to get the reusable and comprehendible code to make sure of the reliability of software. Undoubtedly, as the foundation stone of software engineering, the appliance of design patterns makes the coding more engineerable, as the bricks to mansions.In this paper, the build process of Billing System of a large-sized Telecommunication Corporation is used as the background. Beginning with the general demanding, the system architecture is analyzed explicitly associated with the Design Patterns, Based on which the J2EE based architecture/management modules/logic...