The paper also explains in detail the functions and effects of PABX?s switch modules and control modules about hardware structure and softwate implement. The scheme has been proved by several units and found application.是什么意思_The paper also explains in detail the functions and effects of PABX?s switch modules and control modules about hardware structure and softwate implement. The scheme has been proved by several units and found application.在线翻译_英语_读音_用法_例句