问题描述：
Xxx·xxx，被叫未收到寻呼消息（期间未进行过TAU，只有小区重选）导致呼叫建立失败。需要进一步跟踪确认MME是否未下发对应寻呼。
主叫15:09:23.182发起通话请求，对应SIP消息Invite，在随后的15:09:27.829→15:12:46.611 一共发起三次呼叫尝试，但MS2均未收到寻呼消息，呼叫超时，通话失败。
![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"554.00","h":"375.00","dataType":"png","c":"word/media/image1.png","imgOriW":1362,"imgOriH":602})
主叫上一次正常发起呼叫请求
![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"554.00","h":"340.00","dataType":"png","c":"word/media/image2.png","imgOriW":1357,"imgOriH":602})
被叫上一次通话正常收到寻呼消息
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.40&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"553.40","h":"353.00","dataType":"png","c":"word/media/image3.png","imgOriW":1019,"imgOriH":523})
Paging消息里核心网分配给被叫的TMSI标识（在图中对ＴＭＳＩ加框）
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.82&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"553.82","h":"406.00","dataType":"png","c":"word/media/image4.png","imgOriW":1365,"imgOriH":599})
从xxx到xxx主叫连续3次呼叫失败
![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"554.00","h":"366.00","dataType":"png","c":"word/media/image5.png","imgOriW":1364,"imgOriH":598})
3次主叫呼叫期间被叫均处于idle态
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"553.73","h":"286.99","dataType":"png","c":"word/media/image6.png","imgOriW":955,"imgOriH":495})
从ｘｘｘ到ｘｘｘ时间段内被叫所收到的Paging消息里没有携带被叫TMSI标识
在图中标识出哪些字段是ＴＭＳＩ
![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"554.00","h":"330.00","dataType":"png","c":"word/media/image7.png","imgOriW":1319,"imgOriH":495})
Paging消息里没有被叫TMSI标识
从ｘｘｘ到ｘｘｘ时间段内被叫所收到的Paging消息里没有携带被叫TMSI标识
在图中标识出哪些字段是ＴＭＳＩ
问题描述：
主叫发出INVITE消息后，被叫收到对应寻呼并完成RRC连接以及QCI9和QCI5的承载，以及INVITE消息，但主被叫均未收到来自网络侧的QCI1 EPC Bearer建立命令，语音承载未建立，导致呼叫失败。需要核心网侧检查失败原因。
（后续3次通话均因为主被叫未建立专有承载QCI=1导致呼叫失败）
![](https://wkrtcs.bdimg.com/rtcs/image?w=552.98&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_28","w":"552.98","h":"347.00","dataType":"png","c":"word/media/image8.png","imgOriW":1361,"imgOriH":603})
主叫发起通话请求后建立QCI=5和QCI=9但未建立QCI=1
圈出QCI9和QCI5的建立event
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_0","w":"553.00","h":"366.00","dataType":"png","c":"word/media/image9.png","imgOriW":1361,"imgOriH":600})
被叫收到寻呼请求前建立QCI=5和QCI=9但之后未建立QCI=1
圈出QCI9和QCI5的建立event
![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_0","w":"554.00","h":"385.00","dataType":"png","c":"word/media/image10.png","imgOriW":1366,"imgOriH":700})
RRC配置消息里被叫的默认承载QCI=9激活
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.07&md5sum=3953e59a8850c249c688bd8561f97d2f&sign=7378642f3c&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=69&ipr={"t":"img","r":"r_0","w":"553.07","h":"373.00","dataType":"png","c":"word/media/image11.png","imgOriW":1366,"imgOriH":699})
RRC配置消息里被叫的默认承载QCI=5激活
补2张图，表示主被叫一直到失败均未发生QCI1的建立过程
Xxxx时间点被叫先进行TAU（从TAC6232到TAC6214），完成后随即RRC连接释放。之后收到寻呼消息，且成功建立RRC连接以及QCI9和QCI5的承载，但一直未收到被叫INVITE消息，随后RRC连接被释放。
本文来源：https://www.2haoxitong.net/k/doc/37fd00d814791711cd7917b8.html
文档为doc格式