9 - Design Methodology for Telecommunication Services

Abstract

This chapter describes the design methodology for telecommunication services. The design and development of telecommunication services are carried out in four phases: design of the telecommunication service, description of the telecommunication service by signal sequence or by functional Specification and Description Language (SDL), design of the program structure, and programming in C language and debugging. In design of the telecommunication services process, the telecommunication service is designed. In description of the telecommunication service by signal sequence or by functional SDL, description by signal sequence or SDL is performed depending on the design sheet. In design of the program structure, the program structure is designed according to the description. In the process of programming in C language and debugging, programming is done and the programs are debugged. The signal sequence description or SDL description corresponds to the calling process. Only professionals can describe the process in terms of signal sequence or SDL. To further promote IT in the society, the design method needs to be easy to manipulate not only by professionals but also by nonprofessionals. Development of an easy-to-use design method will facilitate the smooth adoption of IT by society.