pocked造句

• Firstly, the task, structure, technology and function of the existing dispatch system were introduced, whose key technology is based on the tdm and time division switch like pstn . further, the developing direction of pstn is based on ip, the pocked switch system and network, and also the dispatch system of the manned space flight launch base will transmit multimedia information on ip
  首先，介绍了现有调度系统的任务、结构、技术和功能，可以看出，其技术核心是时分多路复用和时分交换技术，现在公用交换电话网(pstn)正向基于ip的包交换系统和网络发展，载人航天发射场调度系统也将利用ip网络技术传输多媒体指挥信息。