Feature-oriented engineering of PBX software for adaptability and reuseability

TLDR

Software engineering seeks to embed adaptability and reusability, especially in PBX systems that must accommodate evolving features, technologies, standards, and regulations, yet most existing approaches focus on single applications. This study applies the Feature‑Oriented Reuse Method (FORM) to analyze domain commonalities and differences, enabling the creation of domain‑oriented architectures and reusable components. FORM employs a feature model that captures domain commonalities and variabilities, guiding the engineering of reusable artifacts and the construction of application software. The results show that FORM enables early analysis of variability and commonality, thereby embedding adaptability and reusability into software and effectively identifying objects. © 1999 John Wiley & Sons, Ltd.

Abstract

Incorporating a high level of adaptability and reusability into software is one challenge that all software engineers face. PBX (Private Branch Exchange) is one such system that requires a high level of adaptability and reusability because of rapidly expanding service features, ever changing communication technology, continuously evolving standards and diverse communication laws and standards in different countries. The software engineering community has made various efforts to address the problem of enhancing software adaptability and reusability. As a result, many programming concepts, such as information hiding, encapsulation, object orientation, abstract data type and modularization, have been developed. Although adequate application of these principles requires the domain or program family perspective, most methods, so far, have been oriented toward developing a single application. FORM (Feature-Oriented Reuse Method), the domain-based software reuse method applied in this paper, concentrates on analyzing and modeling commonalities and differences in applications of a given domain and using the analysis results to develop domain-oriented architectures and software components. The model that captures commonalities and differences is called the ‘feature model’ and it is used for both the engineering of reusable domain artifacts and the development of actual application software with reusable artifacts. We found that FORM facilitates analysis of variability, as well as commonality, of software before the start of engineering and implementation. With this understanding, adaptability and reusability can be built into software. Also, feature modeling has been found to be an effective method for identifying objects. Copyright © 1999 John Wiley & Sons, Ltd.