数据电路暨数字调制解调器(dsu)由本公司供租与维护。用户终端设备(CPE)由用户自备与维护。
Data Circuit and Data Service Unit (DSU) are provided and maintained by CHT while the customer Premises Equipment (CPE) is provided and maintained by the customer.
对无线数据传输系统的构成进行了研究，阐述了基于C8051F 020微处理器和CD MA模块MG801A的数据终端的硬件设计电路和软件接口的实现。
The paper introduces structure of wireless data transmission system, and expounds realization of hardware design circuit and software of DTU based on C8051F020 microprocessor and CDMA module MG801A.
对无线数据传输系统的构成进行了研究，阐述了基于C8051F 020微处理器和CD MA模块MG801A的数据终端的硬件设计电路和软件接口的实现。
The paper introduces structure of wireless data transmission system, and expounds realization of hardware design circuit and software of DTU based on C8051F020 microprocessor and CDMA module MG801A.
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