Software Design For ATM Based Access Transport System

• Main Authors: Tain-Lieng Kao, 高典良
• Other Authors: Kuo-Tan Wu
• Format: Others
• Language: en_US
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/38863464654736383529

博士 === 國立中正大學 === 電機工程研究所 === 88 === Since a transmission system is always equipped with many circuit boards and the cost of high processing power microprocessors is decreasing significantly, it becomes a common practice to equip a microprocessor in each circuit board for many specific functions. A transmission equipment can thus become a multiprocessor system, and distributed control mechanism is required. Distributed control is good for load sharing for the main processor, however, it may become a complicate task in system integration. The software architecture should be designed to hide the hardware as much as possible. The Asynchronous Transfer Mode (ATM) Virtual Path (VP) based Add Drop Multiplexer (ADM) is designed for transporting DS1/E1 tributaries in ATM networks. An ATM VP-based self-healing ring architecture is described. Ring architecture is both flexible and cost effective in the design of ATM VP-based ADM. To reduce the development time and improve the software portability in designing the software for ATM Add Drop multiplexer, the management software is based on an object-based design with objects that interact with each other via messages. This thesis presents distributed control software architecture and object-based design of the ATM Add Drop multiplexer from the standpoint of performance monitor, fault isolation, alarm surveillance, configuration, and security administration. The software modules are modeled and implemented in the ATM Add Drop multiplexer. The design methodology provides code portability and saves development time significantly.