MBN profiles activating and selecting without reason

IoT Modules 5G Module
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1

Hello, I am working with several RG520N-EU modules with firmware version RG520NEUDER03A02M4G_01.200.01.200. I am seeing an unwanted behaviour of the modems activating the MBN profile Volte_OpenMkt-Commercial-CMCC even though they shouldn’t. I have executed

AT+QMBNCFG=“Deactivate”
AT+QMBNCFG=“AutoSel”,0

However, everytime I put a SIM card the MBN profile gets activated and the contexts are modified so registration fails. How can I make sure that the profiles don’t get activated anymore? Thank you in advance

2

Dear @CarlosR_5COMM
After disable mbn automatical selection function, and restart the device.
Then please execute the AT command below to select mbn:
AT+QMBNCFG=“Select”,

Please try this way. If not, please share your AT command flow.

3

Dear @silvia I would like not to activate any profile, since I don’t think there is an appropriate one for the network I am trying to connect. My command flow is the following. Before putting the SIM card:

[2024-06-27_15:04:20:237] AT+QMBNCFG=“List”
[2024-06-27_15:04:20:268]+QMBNCFG: “List”,0,1,0,“ROW_Commercial”,0x0A010809,202111051
[2024-06-27_15:04:20:268]+QMBNCFG: “List”,1,0,0,“Volte_OpenMkt-Commercial-CMCC”,0x0A012010,202209221
[2024-06-27_15:04:20:268]+QMBNCFG: “List”,2,0,0,“Telia_Sweden”,0x0A012400,202111051
[2024-06-27_15:04:20:268]+QMBNCFG: “List”,3,0,0,“TIM_Italy_Commercial”,0x0A012B00,202111051
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,4,0,0,“France-Commercial-Orange”,0x0A010B21,202111051
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,5,0,0,“Commercial-DT-VOLTE”,0x0A011F1F,202212061
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,6,0,0,“Germany-VoLTE-Vodafone”,0x0A010449,202111051
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,7,0,0,“UK-VoLTE-Vodafone”,0x0A010426,202111051
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,8,0,0,“Commercial-EE”,0x0A01220B,202111051
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,9,0,0,“VoLTE-CU”,0x0A011561,202204211
[2024-06-27_15:04:20:284]+QMBNCFG: “List”,10,0,0,“VoLTE_OPNMKT_CT”,0x0A0113E0,202204211
[2024-06-27_15:04:22:300] AT+QMBNCFG=“Deactivate”
[2024-06-27_15:04:24:315] AT+QMBNCFG=“AutoSel”,0

Now, after putting the SIM

[2024-06-27_15:08:20:245 AT+QMBNCFG=“List”
[2024-06-27_15:08:20:468]+QMBNCFG: “List”,0,1,1,“Volte_OpenMkt-Commercial-CMCC”,0x0A012010,202209221
[2024-06-27_15:08:20:468]+QMBNCFG: “List”,1,0,0,“ROW_Commercial”,0x0A010809,202111051
[2024-06-27_15:08:20:468]+QMBNCFG: “List”,2,0,0,“Telia_Sweden”,0x0A012400,202111051
[2024-06-27_15:08:20:468]+QMBNCFG: “List”,3,0,0,“TIM_Italy_Commercial”,0x0A012B00,202111051
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,4,0,0,“France-Commercial-Orange”,0x0A010B21,202111051
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,5,0,0,“Commercial-DT-VOLTE”,0x0A011F1F,202212061
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,6,0,0,“Germany-VoLTE-Vodafone”,0x0A010449,202111051
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,7,0,0,“UK-VoLTE-Vodafone”,0x0A010426,202111051
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,8,0,0,“Commercial-EE”,0x0A01220B,202111051
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,9,0,0,“VoLTE-CU”,0x0A011561,202204211
[2024-06-27_15:08:20:484]+QMBNCFG: “List”,10,0,0,“VoLTE_OPNMKT_CT”,0x0A0113E0,202204211

So, the profile has been activated. I want to prevent this from happening.

4

Sorry for interrupting @CarlosR_5COMM , but did you run the command AT+CFUN=1,1 after disabling the automatic profile selection? This command restarts the modem and is required.

5

Hello @Semsem, I power-cycled the module after applying the commands, but the changes weren’t maintained.

6

Hi @CarlosR_5COMM I recommend you try to run the above command AT+CFUN=1,1 because I think it saves the previous commands you run before resetting the modem. If you just power cycled the modem then the changes will not be saved.

7

As a last resort you can also try to delete that MBN profile if you don’t need it with the command AT+QMBNCFG=“Delete”,

8

Hi @Semsem, I think this will solve the issue. Do you know if there is a way to backup these profiles in case I need to restore them later?

9

I am sorry I really don’t know if it is possible to back them up… Maybe @silvia can help with that

10

Dear @Semsem
Sorry, we don’t have any way to backup these profiles.