Summary

Chapter 6: Fundamental Laptops and Portable Devices 29Generation Standard Name Features Used In2G GSM communications Digital-quality Worldwide(Digitalcalls everywherecellular)iDEN Push-To-Talk service, North and Southinternational roaming America,Philippines,Singapore, SaudiArabia2.5G General Packet Radio Data layer Worldwide(Digital Service (GPRS) for GSMcellular +packet networkfor data)Code Division Multiple Unified Digital North and SouthAccess (CDMA) Data, Voice America, India,CDMA2000 service Indonesia, Japan,1xRTT/IS-2000South KoreaEDGE (CDMA) Data upgrade WorldwideEnhanced Data Rates to GPRSfor Global Evolution3G Universal Mobile Advanced GSM Europe, Africa,(Simultaneous Telecommunications phone system Asia, U.S.voice and data, System (UMTS, alsowith e-mail called 3GSM)and instantmessaging)1xEV-DO/IS-856 Advanced CDMA Worldwide(Pronounced D-O) telephone system4G High Speed Downlink Advanced UMTS Worldwide(Technologies Packet Access (HSDPA) system for voice,that are “3Ghigh-speed dataand beyond”)New technologies that add multimedia and networking functionality can be bundled withcell phone standards. Table 6-7 lists common technologies that can be added to the cellphone bundle of services. Most cell phone providers charge extra for adding these features.