GSM原理介绍(英文版)(ppt 34页)
GSM原理介绍(英文版)(ppt 34页)内容简介
GSM原理介绍(英文版)目录:
一、GSM900/DCS1800
二、The GSM Network & Air Interface
三、Technical Basics
四、Speech Coding
五、Types of Channel
六、Making a Phone Call
GSM原理介绍(英文版)内容摘要:
GSM / DCS1800 Functionalities
1.Speech Services
2.Data Services
3.Short Message Services (SMS)
4.Supplementary Services
5.Subscriber Identity Module (SIM)
6.Security Function
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