RUT956 disconnecting every hour with ESM reject

NETWORKING SOLUTIONS
1

exactly every hour on xx:09 the modem disconnects and pauses for 20 minutes.
Then on xx:29 it connects correctly until xx:09

What can I do about it? or where is the cause?

Cause in the system.log is a
ESM reject cause “Requested service option not subscribed” received

1215 Tue May 13 20:29:22 2025 kern.info Joined LTE network (internal modem)
1216 Tue May 13 20:29:22 2025 kern.info Connected to 22801 operator (internal modem)
1217 Tue May 13 21:09:03 2025 daemon.info gsmd[2198]: Modem 1-1.4 [2c7c:0125] URC Event: ESM reject cause => Requested service option not subscribed
1218 Tue May 13 21:09:03 2025 daemon.info mobifd: [gsm.modem0] ESM reject cause “Requested service option not subscribed” received. Setting connection timeout
1219 Tue May 13 21:09:03 2025 daemon.info mobifd: [gsm.modem0] Connection will be re-established in 1200 seconds
1220 Tue May 13 21:09:04 2025 daemon.notice netifd: mob1s1a1 (1723): Stopping network mob1s1a1
1221 Tue May 13 21:09:04 2025 daemon.notice netifd: mob1s1a1 (1723): Command failed: Not found
1222 Tue May 13 21:09:04 2025 daemon.notice netifd: mob1s1a1 (1723): Stopping network on /dev/cdc-wdm0!
1223 Tue May 13 21:09:04 2025 daemon.notice netifd: Network device ‘qmimux0’ link is down
1224 Tue May 13 21:09:04 2025 daemon.notice netifd: Interface ‘mob1s1a1_4’ has link connectivity loss

3

Hello,

Could you please check if your SIM card has an active data plan? Also, kindly confirm with your carrier that there are no restrictions or limitations on the SIM. Additionally, please check with the provider to ensure that the router’s IMEI is not blocked.

In the router’s WebUI, navigate to Network → WAN, edit the mobile interface, and make sure the correct APN is selected. On the same page, verify the PDP type—for example, if your SIM supports only IPv4, please select IPv4 (as the default is usually IPv4/IPv6).

Let me know how it goes!

Best regards,

4

Hi

thanks for the tips, i have switched PDPto IPv4 but without success,
APN Settings are manually and should be correct.
I will also ask the provider if they can see anything in the subscription.

Is there a possibility to record/log what service the modem requests before the connection is rejected?

Regards
David

5

Hello,

Please let me know once you have any updates from your provider.
If the issue persists, I will consult with our developers about the logs.

Best regards,

6

We were able to solve the problem by switching off “VoLTE” in Mobile → Conncetion → SIM1

7

I’m glad to hear you’ve found a solution!

If you have any further questions or need assistance, feel free to reach out on the forum.

Best regards,

8

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