GSM Attach Procedure

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GSM Attach Procedure

GSM initial attach to the network, step by step messages from Network <=> MS

1. [0x5B2F/002/129] | OTA LOG | 07:21:52.178 | GSM DSDS RR Signaling Message
Channel Type = RACH (2)
Direction = Uplink
Message Type = Open Loop CMD ACK (129)
Message Length in bytes = 24
L3 Message in Hex: 17 49 06 1B 3E 46 04 F4 94 00 2A C8 00 0A 14 65 4A B8 00 00 81 00 05 9B
Decoded Message:
prot_disc = 7 (0x7) (GSM_EPS_MOB_MANAGEMENT)
msg_type = 73 (0x49)

2.00x5B2F/002/129] | OTA LOG | 07:21:52.178 | GSM DSDS RR Signaling Message
Channel Type = BCCH (1)
Direction = Uplink
Message Type = System Information Type 9 (4)
Message Length in bytes = 19
L3 Message in Hex: 12 06 15 AB EB 7E 00 00 00 00 00 00 00 00 00 00 00 00 00
Decoded Message:
prot_disc = 6 (0x6) (GSM_RR_MANAGEMENT)
msg_type = 21 (0x15)
MEASUREMENT_REPORT
BA_USED = 1 (0x1)
DTX_USED = 0 (0x0)
RXLEV_FULL_SERVING_CELL = 43 (0x2b)
3G_BA_USED = 1 (0x1)
MEAS_VALID = 1 (0x1)
RXLEV_SUB_SERVING_CELL = 43 (0x2b)
SI23_BA_USED = 0 (0x0)
RXQUAL_FULL_SERVING_CELL = 7 (0x7)
RXQUAL_SUB_SERVING_CELL = 7 (0x7)
NO_NCELL_M = 0 (0x0)

3. [0x713A/005/008] | OTA LOG | 06:16:53.089 | MM/Location Updating Request |
Direction : MS To Network
Message Direction = From UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
LOCATION_UPDATE_REQUEST
mcc_1 = 4 (0x4)
mcc_2 = 0 (0x0)
mcc_3 = 4 (0x4)
mnc_3 = 15 (0xf)
mnc_1 = 1 (0x1)
mnc_2 = 3 (0x3)
loc_area_code = 65534 (0xfffe)

4. [0x713A/008/001] | OTA LOG | 06:16:53.624 | GMM/Attach Request |
Direction : MS To Network
Message Direction = From UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
GMM_ATTACH_REQUEST

 5. [0x713A/005/018] | OTA LOG | 06:16:53.846 | MM/Authentication Request |
Direction : Network To MS
Message Direction = To UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
AUTHENTICATION_REQUEST

6. [0x713A/005/020] | OTA LOG | 06:16:54.335 | MM/Authentication Response |
Direction : MS To Network
Message Direction = From UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
AUTHENTICATION_RESPONSE

7. [0x713A/008/018] | OTA LOG | 06:16:56.201 | GMM/Authentication And Ciphering Request
Direction : Network To MS
Message Direction = To UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
GMM_AUTHENTICATION_AND_CYPHERING_REQUEST

8. [0x713A/005/024] | OTA LOG | 06:16:56.671 | MM/Identity Request |
Direction : Network To MS
Message Direction = To UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
IDENTITY_REQUEST

9. [0x713A/005/025] | OTA LOG | 06:16:56.672 | MM/Identity Response |
Direction : MS To Network
Message Direction = From UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
IDENTITY_RESPONSE

10. [0x713A/008/019] | OTA LOG | 06:16:56.766 | GMM/Authentication And Ciphering Response |
Direction : MS To Network
Message Direction = From UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
GMM_AUTHENTICATION_AND_CYPHERING_RESPONSE

11.[0x713A/005/002] | OTA LOG | 06:16:57.377 | MM/Location Updating Accept |
Direction : Network To MS
Message Direction = To UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
LOCATION_UPDATE_ACCEPT
mcc_1 = 4 (0x4)
mcc_2 = 0 (0x0)
mcc_3 = 4 (0x4)
mnc_3 = 15 (0xf)
mnc_1 = 1 (0x1)
mnc_2 = 3 (0x3)
loc_area_code = 20034 (0x4e42)

12. [0x7B3A/005/026] | OTA LOG | 07:23:37.083 | MM/TMSI Reallocation Command
     Direction : Network To MS
Message Direction = From UE
prot_disc = 0 (0x0) (GSM_GROUP_CALL_CONTROL)
TMSI_REALLOCATION_COMMAND

13. [0x713A/005/027] | OTA LOG | 06:16:57.379 | MM/TMSI Reallocation Complete
     Direction : MS To Network
Message Direction = From UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
TMSI_REALLOCATION_COMPLETE

14. [0x713A/005/050] | OTA LOG | 06:16:57.847 | MM/MM Information |
Direction : Network To MS
Message Direction = To UE
prot_disc = 5 (0x5) (GSM_MOB_MANAGEMENT)
MM_INFORMATION

15. [0x713A/008/033] | OTA LOG | 06:17:04.419 | GMM/GMM information |
Direction : Network To MS
Message Direction = To UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
GMM_INFORMATION

16. [0x713A/008/002] | OTA LOG | 06:17:04.174 | GMM/Attach Accept |
Direction : Network To MS
Message Direction = To UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
GMM_ATTACH_ACCEPT
routing_area_id
mcc_1 = 4 (0x4)
mcc_2 = 0 (0x0)
mcc_3 = 4 (0x4)
mnc_3 = 15 (0xf)
mnc_1 = 1 (0x1)
mnc_2 = 3 (0x3)
lac = 20034 (0x4e42)
rac = 148 (0x94)

17. [0x713A/008/003] | OTA LOG | 06:17:04.172 | GMM/Attach Complete |
Direction : MS To Network
Message Direction = From UE
prot_disc = 8 (0x8) (GSM_GMM_MESSAGES)
     GMM_ATTACH_COMPLETE

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