近几年通信网中引入了许多新技术、新业务,给运营、工程设计、规划建设及引进工作带来一些技术协调问题,急需各类标准作为协调依据。为推进通信行业标准的贯彻实施,满足广大读者对通信技术标准的需求,我们对通信技术标准按专业进行系 In recent years, many new technologies and new services have been introduced into the communications network, bringing some technical coordination issues to operations, engineering design, planning, construction and introduction and urgently requiring various standards as the basis for their coordination. In order to promote the implementation of the communication industry standards and meet the readers’ needs for communication technology standards,