Basic GSM Call Flows
-
Upload
emyl97 -
Category
Technology
-
view
5.926 -
download
8
description
Transcript of Basic GSM Call Flows
![Page 1: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/1.jpg)
With traces from Huawei MSOFT
![Page 2: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/2.jpg)
BASIC Call Flow Basic Call Flow
1. Location Update2. MOC TDM3. MOC IP4. MTC TDM5. MTC IP
![Page 3: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/3.jpg)
Basic Call Flow
Location Update (LOC UP)
![Page 4: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/4.jpg)
Location Update
![Page 5: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/5.jpg)
LOC Up: Identity Response
![Page 6: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/6.jpg)
LOC UP: Authentication
![Page 7: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/7.jpg)
LOC UP: AUC Internal Structure
IMSI Ki
RANDOM number
generatorRAND
SRES
Kc
Ki
MSCHLR
AUC
IMSIIMSI
A3
triplet triplet
A8
![Page 8: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/8.jpg)
LOC UP: Authentication
![Page 9: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/9.jpg)
LOC UP: Authentication
MSC RAND SRES
Kc
RAND
SIM
RAND
Ki
A3
A8
SRES
SRES
Kc
SRES = SRES?
![Page 10: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/10.jpg)
LOC UP: Authentication Request
![Page 11: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/11.jpg)
LOC UP: Authentication Response
![Page 12: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/12.jpg)
LOC UP: Update Location Req
![Page 13: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/13.jpg)
LOC UP: Insert Subscriber Data
![Page 14: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/14.jpg)
LOC: IMEI receive
![Page 15: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/15.jpg)
LOC UP: Ciphering
![Page 16: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/16.jpg)
LOC UP: TMSI Reallocation
![Page 17: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/17.jpg)
Basic Call Flow
Mobile Originating Call (MOC)
![Page 18: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/18.jpg)
MOC: Complete call Trace
![Page 19: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/19.jpg)
CM Service Request
![Page 20: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/20.jpg)
MOC : “Setup” MessageSetup message contains the dialed number from the Mobile station (MS)
![Page 21: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/21.jpg)
MOC: (SRI) Send Routing Information
![Page 22: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/22.jpg)
MOC: Reply from HLR
![Page 23: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/23.jpg)
Assignment Request
![Page 24: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/24.jpg)
MOC: IAM – Initial Address Message
![Page 25: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/25.jpg)
MOC: ACM – Address Complete Message
![Page 26: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/26.jpg)
MOC: Connect & Release
![Page 27: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/27.jpg)
Basic Call Flow
Mobile Terminating Call (MTC)
![Page 28: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/28.jpg)
MTC: Complete Trace
![Page 29: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/29.jpg)
MTC: Provide Roaming Number (PRN)
![Page 30: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/30.jpg)
MTC: PRN Response
![Page 31: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/31.jpg)
MTC: IAM
![Page 32: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/32.jpg)
Paging Request
![Page 33: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/33.jpg)
Paging Response
![Page 34: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/34.jpg)
Set UP
![Page 35: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/35.jpg)
IP CALL
![Page 36: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/36.jpg)
Call Flow through IP( MOC)
![Page 37: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/37.jpg)
BICC TYPE IAM
![Page 38: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/38.jpg)
TO BICC TYPE APM
![Page 39: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/39.jpg)
FROM BICC TYPE APM
![Page 40: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/40.jpg)
Call Flow through IP( MTC)
![Page 41: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/41.jpg)
PRN
![Page 42: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/42.jpg)
PRN Response
![Page 43: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/43.jpg)
BICC TYPE IAM
![Page 44: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/44.jpg)
Set UP
![Page 45: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/45.jpg)
TO BICC TYPE APM
![Page 46: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/46.jpg)
FROM BICC TYPE APM
![Page 47: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/47.jpg)
Assignment Request
![Page 48: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/48.jpg)
ALERT AND BICC TYPE ACM
![Page 49: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/49.jpg)
CONNECT AND BICC TYPE ANM
![Page 50: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/50.jpg)
DISCONNECT AND RELEASE
![Page 51: Basic GSM Call Flows](https://reader033.fdocuments.us/reader033/viewer/2022061423/5577c880d8b42ae0418b4730/html5/thumbnails/51.jpg)
THANK YOU