RUT241 and RUT240 very low Mbps

NETWORKING SOLUTIONS
1

Hi,

During the last weeks the two router I have installed (one is RUT241 and the other one is RUT240) have a very low downloading speed, something like 0.02 Mbps.

I just updated the firmware but it’s still not working properly.

How can i fix it??

Thanks!

1 Like
2

I am having this same problem

4

Hello,

The quality of your download speed depends on several factors, including connection coverage, terrain, base station load, distance from the base station, as well as antenna power, type, direction, and other characteristics.

  1. Could you confirm if both mobile antennas are properly connected at a 90-degree angle to your device?
  2. Please let me know the firmware versions installed on your routers.
  3. Could you share a screenshot from Status → Network → Mobile? You can find information about the recommended signal strength here: Mobile Signal Strength Recommendations.
  4. Additionally, please specify the internal modem firmware versions of your devices, which can be found under System → Firmware → Update Firmware.

While some improvements can enhance the speed, it’s important to note that the RUT240/RUT241 uses a Cat 4 modem with a maximum theoretical download speed of 150 Mbps. It is limited to utilizing one carrier at a time.

Suggestions for Maximizing Throughput:

  • Enable Software Flow Offloading: Navigate to Network → Firewall → General Settings and enable Software Flow Offloading.
  • Test Using Different Servers: Ideally, use iPerf3 to measure real speeds, as Ookla servers may be overloaded.
  • Refer to Related Issue: You can check out this thread for additional insights: Very slow speed RUT955 - #2 by AndzejJ.

Best regards,

5

Hello,

Thank you very much for your answer.

I’ll try to answer all your four questions:

The weird thing is that the routers used to work properly but suddenly one day both of them became very slow downloading the data (it’s impossible to download the data in this way). At the beginning I thought it was a problem with the mobile signal in the area, but now it has been a long time with this issue so I don’t know what is happening.

  • The current version is: RUT2M_R_00.07.11.1

  • Screenshot from **Status → Network → Mobile: Image attached (Network_status.png)

  • The Internal modem firmware version is: SLM750-V_4.57.20_EQ101

Thank you very much.

Best wishes,

6

I cannot update the firmware as it states no access to server.
The factory supplied antennas are installed as before mentioned, 90 degrees.

2024-12-09 13_02_03-Teltonika-RUT240.com - Mobile - Web UI
2024-12-09 13_02_03-Teltonika-RUT240.com - Mobile - Web UI798×750 12.4 KB

2024-12-09 13_02_45-Teltonika-RUT240.com - Firmware - Web UI
2024-12-09 13_02_45-Teltonika-RUT240.com - Firmware - Web UI1278×754 31.1 KB

7

Hello @mlittlej ,

It appears that your device is operating on legacy firmware. You can download the latest legacy firmware version from this page: RUT240 Firmware Downloads (Legacy WebUI). Once downloaded, you can upgrade your device by selecting Upgrade from File on the same page.

After upgrading to the latest legacy firmware, you may attempt to update your device to the RutOS firmware version (if your device hardware supports it, as older hardware may not be compatible). RutOS firmware versions are available here: RUT240 Firmware Downloads.

Please let me know how it goes!

Best regards,

8

Hello @ppi ,

Thank you for the detailed information.

Do you recall any specific events that occurred when the issue appeared? For example, were any configuration changes made to the router, or did anything else happen around that time?

Have you tried using the SIM card in a different device (e.g., another router)? If so, were the results with mobile speed the same?

Best regards,

9

Hi Marija,

I don’t remember any specific event at that time and I didn’t change anything in the routers configuration.

As for the SIM test, unfortunately the devices are installed far away from my office, so I don’t have access to the SIM cards at the moment.

Best wishes,

10

Please try the suggestions provided and let me know if the situation changes.

Best regards,

11

Hi Marija,

I followed your last suggestions (Software Flow Offloading was already enabled; I also tried to manually set the band…), but it’s still very slow.

Any other suggestions, or, do you think the only possibility is that it’s something related to the SIM card, but I don’t get it, it was working fine and we haven’t changed anything.

Thanks.

Best regards

12

Hello @ppi ,

I would like to review a troubleshoot file from your device. I have sent you a form to fill out; once completed, I will contact you privately regarding this. Please use the ticket ID “10883”.

Best regards,