RUT956 will not connect to network via SIM

NETWORKING SOLUTIONS
1

The SIM is detected by the RUT.
The SIM is active.
Operator State is “searching”
how can I work out what is going on??
If I was debugging my own IOT device I’d be watching the modem AT commands, is there an equivalanet?
thanks

3

Hello,

You can manually select the operator by navigating to Network → Mobile → Network Selection in the WebUI. More details can be found here: Manual Operator Selection.

Additionally, I recommend setting a custom APN under Network → WAN → Edit Mobile Interface → General Settings and selecting the appropriate PDP type (IPv4/IPv6, IPv4, or IPv6) as required by your operator. More information is available here: WAN General Settings.

Regarding AT commands, you can use serial utilities for modem control as described here: Modem Control via Serial Utilities.
Alternatively, you can use the gsmctl command to execute some AT commands via SSH. Further details can be found here: AT Commands.

Best regards,

4

Hi
thanks for your reply.
I’ve set a manual APN and have verified this type of SIM in another device.

When I try to “scan for operators”, i get no results and actually an error “Failed to get scan results”.

if I do:
root@RUT956:~# gsmctl -A AT+CGREG?
+CGREG: 2,0

I think this means the device is looking for a network but cannot find one??

thanks again for any help

5

  1. Could you please confirm that both mobile antennas are properly attached to the device at a 90-degree angle?

  2. Please share a screenshot of Status → Network → Mobile from WebUI.

  3. Could you confirm if the default SIM is correctly selected in Network → Mobile → General?

  • If the SIM is inserted in SIM1, ensure that SIM1 is set as the default (same for SIM2 if inserted there).
  • Also, check if the SIM requires a PIN. If it does, please enter it in the same section:
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Best regards,

6

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7

both antenna were connected and I haven’t used SIM PINs on these devices.
thanks again

8

Hello,

Could you please confirm if you have tested this SIM card on different devices? Alternatively, have you tried using a different SIM card in the RUT956? Are the results the same?

Additionally, please update your device to the latest available RutOS firmware version 7.13, which can be downloaded here: RUT956 Firmware Downloads.

Could you also provide the internal modem firmware version? You can find this in System → Firmware → Update firmware in the WebUI.

Best regards,

9

I’ve tried two Things Mobile SIMS. Neither worked in the RUT, but they do in another IoT device.
I tried an Aeris SIM and EE SIM and none worked (all with the correct custom APN I’d normally use)

I’ve ordered a Hologram SIM, but that wont be here for a few more days.

Firmware updated (the one released yetserday!)

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Manually scanning for Operators returns nothing.

thanks again

10

Thank you.

I have sent you a form to fill out. Once completed, I will contact you privately regarding this issue for further troubleshooting. For the ticket ID, please use “12557.”

Best regards,

11

The cause of the issue was that a North American product code, RUT956 A*****, was being used in the UK. Unfortunately, the UK and North America support different mobile bands, so it is not possible to connect a North American device in the UK.

Best regards,