RRC建立原因大概有19种，看你给多少威望啊

Originating Background Call 后台类业务主叫发起RRC连接的原因值。是数据下载，图铃下载，邮件收发
Originating Conversational Call语音业务主叫发起RRC连接的原因值。就是你打电话，语音电话和视频电话
Originating Interactive Call 交互类业务主叫发起RRC连接的原因值。主为是指在线游戏，网页浏览，定位业务

RRC建立原因：
 Originating Conversational Call
 Originating Streaming Call
 Originating Interactive Call
 Originating Background Call
 Originating Subscribed traffic Call
 Terminating Conversational Call
 Terminating Streaming Call
 Terminating Interactive Call
 Terminating Background Call
 Emergency Call
 Inter-RAT cell re-selection
 Inter-RAT cell change order
 Registration
 Detach
 Originating High Priority Signalling
 Originating Low Priority Signalling
 Call re-establishment
 Terminating High Priority Signalling
 Terminating Low Priority Signalling
 Terminating – cause unknown

算了还是告诉你吧
会话类，就是语音电话和视频电话
交互类。主为是指在线游戏，网页浏览，定位业务
还有后台类，是数据下载，图铃下载，邮件收发
还有流媒体业务，手机电视，视频点播，交通监控。
（1）呼叫原因
Originating Conversational Call（0）主叫会话类（语音、视频）
Originating Streaming Call(1) 主叫流媒体业务
Originating Interactive Call (2)主叫交互类业务
Originating Background Call （3） 主叫后台类业务
Originating Subscribed traffic Call(4) 发起预定业务
Terminating Conversational Call（5）被叫会话类（语音、视频）
Terminating Streaming Call （6） 被叫流媒体业务
Terminating Interactive Call（7） 被叫交互类业务
Terminating Background Call （8）被叫后台类业务
Emergency Call（9）紧急呼叫
（2）重定位原因
Inter-RAT cell re-selection （10）小区重选
Inter-RAT cell change order （11）小区改变
Registration（12）, Detach （13）注册、关机
Originating High Priority Signalling （14）HSDPA业务
Originating Low Priority Signalling（15）短信发送
Call re-establishment （16） 呼叫重建
Terminating High Priority Signalling（17） HSDPA业务
Terminating Low Priority Signalling （18）短信接收
Terminating – cause unknown （19）

楼上的回答很全面哦呵呵

学习了，谢谢啊兄弟

Establishment Cause：
Originating Conversational Call 会话类主叫（语音，视频电话主叫...）
Originating Streaming Call流媒体类（移动电视...)
Originating Interactive Call交互类（Web浏览）
Originating Background Call背景类（FTP下载SMSEMAIL）
Originating Subscribed traffic Call
Terminating Conversational Call会话类被叫（ 语音被叫... )
Terminating Streaming Call流媒体类被叫
Terminating Interactive Call交互类被叫
Terminating Background Call背景类被叫
Emergency Call紧急呼叫
Inter-RAT cell re-selection系统间小区重选
Inter-RAT cell change order系统间(PS)
Registration 注册、位置更新
Detach去附着
Originating High Priority Signalling 短信发送(主)
Originating Low Priority Signalling
Terminating High Priority Signalling短信发送(被)
Terminating Low Priority Signalling
Call re-establishment

EstablishmentCause ::=ENUMERATED {
originatingConversationalCall,
originatingStreamingCall,
originatingInteractiveCall,
originatingBackgroundCall,
originatingSubscribedTrafficCall,
terminatingConversationalCall,
terminatingStreamingCall,
terminatingInteractiveCall,
terminatingBackgroundCall,
emergencyCall,
interRAT-CellReselection,
interRAT-CellChangeOrder,
registration,
detach,
originatingHighPrioritySignalling,
originatingLowPrioritySignalling,
callRe-establishment,
terminatingHighPrioritySignalling,
terminatingLowPrioritySignalling,
terminatingCauseUnknown,
spare12,
spare11,
spare10,
spare9,
spare8,
spare7,
spare6,
spare5,
spare4,
spare3,
spare2,
spare1 }

学习了，谢谢分享~

哎呀，学习了，谢谢！

新手 学习了 谢谢

自己顶起觉得这东西还是蛮有用的啊

不错，学习了，版主帮你顶顶。