通信运营与管理专业英语教程 教学课件 李学军 unit 2.pdfVIP

Unit 2 Mobile phone and application 浙江邮电职业技术学院 李朝晖 Revision of Unit 1  Brief introduction to communication  Significance and role of telecom on the microeconomic scale on the macroeconomic scale  Development of telephones  Characteristic of voice communication Unit 2 Mobile phone and applications (I)  Main manufacturers of mobile phones  Mobile phone penetration rate  Technical standards of mobile phones  Culture and customs  Etiquette of mobile phone use  Mobile phone use by drivers Important vocabulary  3G (the third generation) 第三代通信系统  subscriber 用户,订购者  short message service (SMS) 短消息服务  signal-jamming 信号干扰  antenna 天线  cellular telephony 移动电话  penetration rate 覆盖率  pay-as-you-go 预付费业务 Important vocabulary  GSM 全球移动通信系统 (global system for mobile communication)  CDMA 码分多址 (Code-division Multiple Access) W-CDMA 宽带码分多址 TDMA 时分多址 (Time-division Multiple Access) hand-held telephone 手提电话 hand-free telephone 免提电话 Several examples of non-folding mobile phones. Various cell phones from the past 10–15 years. 1. NEC Cellstar 500 series (1992) 2. Nokia 2110 series (1994) 3. Nokia 5120 (1998)