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现阶段光纤通信技术的发展需要有光电转换设备,因而终端设备包括光端机和电端机。 2.电端机 电端机主要指数字复用设备。我国采用CCITT推荐的2Mb/s系统数字复用系列设
At this stage, the development of optical fiber communication technology requires photoelectric conversion equipment, so the terminal equipment includes optical transceivers and electrical transceivers. 2. Electrical Terminals Electrical terminals refer to digital multiplexing equipment. China adopts 2Mb/s system digital multiplexing series recommended by CCITT