Hello,
I’m not a technician but have a little knowledge.
I have few RUT901.
Two days ago one of my Teltonika was stuck in a autoreboot loop because it did pick always one specific operator that doesn’t work on this location. I Have a M2M SIM.
I could not connect to RMS or anything, I had to go onsite and block this specific operator.
My question how can I avoid this type of problem on my other router ?
Teltonika is not smart enough to switch operator when it stuck for two days with AUTO PING reboot trying the same operator ?
How can I send you my troubleshoot file ? (New user)
If there is no solution, can you show me a workaround to send SMS command to force manual operator ? I did not find any SMS command for this type of problem
Best regards
Isaac
UP please I would really need some clarification to avoid this situation
Good afternoon,
Your Teltonika RUT901 router was stuck in an auto-reboot loop because it kept selecting a specific mobile operator that does not provide service at your location. This prevented remote management (RMS) and required an onsite visit to manually block the problematic operator. You want to avoid this situation in the future, ideally by making the router smarter in operator selection or by enabling remote intervention (such as via SMS).
Teltonika routers with M2M SIMs are generally designed to select the strongest available network automatically. However, sometimes the router “sticks” to an operator it previously connected to, even if that operator is no longer available or functional at the current location. This can result in repeated failed connections and auto-reboots, as you experienced.
By default, the RUT901 (and similar models) will attempt to reconnect using the last known operator, especially if set to “Auto” mode. The device does not always perform a fresh scan for all available operators after each failed connection or reboot—sometimes it continues to try the same operator, leading to the kind of loop you described.
Manual Operator Blacklist/Whitelist
You can manually block problematic operators in the router’s web interface. This prevents the router from connecting to them in the future. However, this requires prior knowledge of which operators to block and is not dynamic
Use Manual Network Selection
Instead of “Auto” mode, you can set the router to “Manual” mode and select a specific operator that is known to work at the site. This is more stable but less flexible if you move the device or if network conditions change
SMS Utilities for Remote Control
Teltonika routers support a range of SMS commands, but there is no default SMS command to force a specific operator selection. However, you can:
Use the mobile_off and mobile_on SMS commands to reset the mobile connection, which may trigger the router to reconnect to a different operator if the current one is unavailable.
Use the uci SMS command to change configuration settings via the UCI API, which could theoretically be used to change operator selection, but this requires advanced scripting and knowledge of the router’s configuration system.
Regards,
Arturas
Hello,
Could you add a function to block the current operator with an SMS command or automatically?
I’m not expert but this situation happen more frequently that you would imagine.
We buy professionnel Router M2M sim and we still need to go on-site to unblock this situation because the router is not smart enought after X auto-reboot loop to temporary block the operator…
I will try this next time it happen.
Best regards
Hi there,
There is no built-in SMS command to directly block the currently connected operator with a single message.
Teltonika routers (including RUT901) support blacklisting and whitelisting mobile operators by their MCC/MNC codes. This is done through the web interface:
Network ⇒ Mobile ⇒ Network Operators ⇒ Operator List .
You can add operators to a blacklist to prevent the router from connecting to them.
You can also create custom SMS rules that execute scripts, which opens the door for more advanced automation.
Regards,
Arturas