This paper mainly introduces the application of distributed database based on GIS in telecommunicationcircuit resource management system.
本文详细阐述了基于GIS(地理信息系统)的分布式数据库在电信线路管理方面的应用。
2
With the progress of telecommunication technology, PSTN based on circuit switch technology is carrying out the transition to the Next Generation Network (NGN) increasingly.
随着电信技术的进步，基于电路交换技术的PSTN正逐步向下一代网络（NGN）过渡。
3
Uses: Extensively apply to dc and pulse circuit of broadcasting and TV sets. all kinds of instruments and telecommunication equipments and energy saving lamps.