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武汉邮电科学研究院研制的三次群光电合架(GD/MF 34H)光线路复用终端机,于今年5月24日在浙江嘉兴邮电局开通并进网使用。此光传输系统是武汉邮电科学研究院按照目前我国邮电通信发展的特点并根据嘉兴局的实际需要研制生产的。本期工程以嘉兴局为母局并开通嘉兴～海盐、嘉兴～平湖、嘉兴～三水湾等四个系统。其光电合架端机的线路码型均采用1B1H插入比特方式,开通容量为720话路。用户可根据本地的实际情况与程控交换机配合逐渐扩容。本系统开通验收时,所有光电合架设备的传输特性、数据信道、公务通信等各项指标测
Wuhan Post and Telecommunication Research Institute developed a three-beam optical telex (GD / MF 34H) optical line multiplexing terminals, on May 24 this year, Zhejiang Jiaxing Post Office opened and used into the network. The optical transmission system is the Wuhan Institute of Posts and Telecommunications in accordance with the current characteristics of China’s post and telecommunications development and development according to the actual needs of Jiaxing Bureau of production. This project takes Jiaxing Bureau as its parent bureau and launches four systems: Jiaxing ~ Haiyan, Jiaxing ~ Pinghu, Jiaxing ~ Sanshui Bay. Its optoelectronic frame terminal line patterns are used 1B1H insert bit mode, the opening capacity of 720 sessions. Users can be based on the local situation with the program-controlled switches with gradual expansion. The system opened when the acceptance, all optical transmission equipment rack transmission characteristics, data channels, official communications and other indicators test