| 本书是一部专业的高职电信英语教材,本书共4大单元，每个单元由4篇相关的课文组成，系统介绍了数据传输、光纤通信、无线通信和通信网结构等方面的内容。每篇课文都分为4个模块：Text、New Words and Phrases、Notes和Exercises。在每个单元后均附有Useful Skills和Readihg Material，在本书末尾，编者加注了练习参考答案和附录。 |
| Unit 1 Data Communication 1 Text 1 Introduction to Data Communication 1 Text 2 Data Transmission 7 Text 3 Switching Technologies 14 Text 4 Data Communication Protocol 20 Useful Skill：电信英语专业词汇的学习 26 Reading Material：Asynchronous Transfer Mode (ATM) 30 Unit 2 Optical Fiber Communication 34 Text 1 Introduction to Optical Communication System 34 Text 2 SDH (Synchronous Digital Hierarchy) 40 Text 3 Fiber-optic Cable 46 Text 4 Fiber to the Home 52 Useful Skill：科技英语的句子结构特点分析 58 Reading Material：A Short History of Fiber Optics 62 Unit 3 Wireless Communication 66 Text 1 GSM (Global System for Mobile Communication) 66 Text 2 Code Division Multiple Access (CDMA) 72 Text 3 Introduction to 3G 78 Text& |
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