该接口在雾里上课采用双绞线、同轴电缆、微波或光纤来实现。
The interface used in the Fog class UTP, coaxial cable, microwave or fiber to achieve.
鉴于客户的经济承受能力，应充分利用现有的铜轴电缆和双绞线，结合光纤媒质来实现宽带接入网。
Con sidering customers' economical capability, the existed cables and twisted-pairs should be made full use in combination with optical cable to realize broad-band access network.
在系统主干线通道上采用光纤通信方式，对于分支通信采用屏蔽双绞线以RS-485方式通信，并对网络体系结构作了详细的描述。
Optical fiber communication mode is adopted in main channels, RS-485 communication mode using shielding twisted pair lines is employed in branch channels, and detailed descri…
这个模式下，UDLD可以检测到由于端口的误接引起的光纤的单向链路，并且还可以检测到光纤及双绞线链路中的单向链路。
In aggressive mode, UDLD can also detect unidirectional links due to one-way traffic on fiber-optic and twisted-pair links and to misconnected interfaces on fiber-optic links.
这个模式下，UDLD可以检测到由于端口的误接引起的光纤的单向链路，并且还可以检测到光纤及双绞线链路中的单向链路。
In aggressive mode, UDLD can also detect unidirectional links due to one-way traffic on fiber-optic and twisted-pair links and to misconnected interfaces on fiber-optic links.
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