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GSM支持的基本业务可以分为电信业务与承载业务两大类型,它们有什么区别?GSM支持的主要电信业务有几种类型?

问答题
2021-08-02 07:05
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正确答案

电信业务提供包含终端设备(TE)功能在内的完善通信能力,其特点是除了包括OSI模型中1至3层属性外,还包含描述OSI参考模型中4至7层高层功能和协议的属性。承载业务仅提供接入点之间传输信号的能力,它仅包含OSI模型中1至3层相对应的底层属性。
GSM支持的主要电信业务有以下几种类型:
(1)语音业务
(2)短消息业务
(3)小区广播式短消息业务
(4)可视图文接入
(5)智能用户电报传送
(6)传真


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