计算机网络知识介绍传输介质和通信方式１传输介质计算机网络使用的传输介质有电话线路、双绞线、同轴电缆、光纤电缆、微波和卫星通信等。（１）电话线路。电话系统是现有的最普遍的远程通信系统，自然是计算机网络的传输介质首先选用的对象。电话线路原来用于传输音频模... Computer Network Knowledge Introduction Transmission Media and Communication Methods 1 Transmission Media Computer networks use telephone lines, twisted pair, coaxial cable, optical fiber cable, microwave and satellite communications. (1) Telephone lines. Telephony is the most prevalent telecommunications system available and is naturally the first choice of transmission medium for computer networks. Phone lines used to transmit audio ...