Question

Hi there -

Running RUTX11 07.03.1.

I've attached a System Log excerpt (XLS, 2 tabs, Several modem reloads highlighted) that shows several SIM switches and the Mobile Modem establishing a connection. I wanted to share, in case there is an opportunity to optimise the Operator Connection process. In all fairness, these connections take about 30 seconds, which is acceptable, however when looking at the logs and watching the UI, you do see a series of connects and disconnects - however I am not technical enough to know why and/or if this is normal for mobile connections.

I am happy to send more information as needed. These connections have standard config for SIM 1 and 2, and simply have Custom APN for both in each of the interfaces. Firewall is set to pretty much vanilla config,

Thanks for taking a look.

Answer 1

Hello,

Did you experience mobile connection issues with previous firmware versions?

I would like you to attach a complete troubleshoot file to your question. Please, replicate the issue, then access router's WebUI, go to System -> Administration -> Troubleshoot section and download troubleshoot file from there. The logs in the file might provide more insight into the issue.

Attached files are private and visible only to Teltonika Moderators.

Best regards,

Comments

Hi ZygimantasBliu -

Updated ticket with the troubleshoot file, whilst keep the updated Log file analysis.

My understanding is this process of connect-disconnect-reconnect per new modem data connection seems to be a consistent experience since using the RUTX11 a couple of months ago.

Please let me know how else I can help.

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Looking at the logs, the disconnects are not correlated to anything. Unless it is weather conditions, or heavy load of the base tower.

Settings manual LTE bands can be attempted. This video instructs how can this achieved.

Also modem firmware update can be attempted, but it does not guarantee improvement, and also requires alternative stable internet source. Instructions provided here apply in your case as well.

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Hi ZygimantasBliu -

Those prior examples of establishing a modem connection and the associated inefficiency are in good weather conditions and across any/all times of the day. I would suggest it's a Device and/or Device+SIM issue versus a Network load/fault. The issue is broadly consistent across both SIMs too.

Regarding the Band selection, I don't think this will make a difference to the process, but the idea of forcing a connection to a specific Mast would be VERY helpful given some of the issues I am having with EE when it rains (they have a faulty local mast). The problem is all surrounding EE masts are Band 3. Is there a way to be SPECIFIC TO A MAST / CELL instead - either via UI or through some script/CLI config?

Regarding the modem firmware update, this is what I have, and it suggests via the UI that there are new no updates. Are you suggesting there is a specific update I should look to install?

Firmware version	RUTX_R_00.07.03.1
Firmware build date	2022-12-30 13:13:27
Internal modem firmware version	EG06ELAR04A04M4G
Kernel version	5.4.221

Thanks.

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Is there a way to be SPECIFIC TO A MAST / CELL instead - either via UI or through some script/CLI config?

If what you want is to lock your device to a specific cell, please check this link, for configuration details.

Are you suggesting there is a specific update I should look to install?

EG06ELAR04A04M4G is not the latest version. The details are in the referenced link in the previous comment. 

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Thanks Zygimantas,

I will check out the cell locking shortly.

In the meantime, I tried to update the modem firmware across an alternative WAN - I get this error. Any guidance? This process now seems to have caused SIM 2 to constantly be showing SIM Card State "Not Inserted".

[ERROR] firmware directory is empty. Mount failed? Exiting...

****

root@Teltonika-RUTX11:~# modem_updater -i 3-1 -v EG06ELAR04A08M4G

[INFO]found modem_n: 0

[000.000]: Version: QFirehose_Linux_Android_V1.4.8

[000.000]: Builded: Dec 30 2022 12:01:23

[000.001]: P: /dev/bus/usb/003/008 idVendor=2c7c idProduct=0306

[000.001]: C: /dev/bus/usb/003/008 bNumInterfaces: 5

[000.001]: I: If#= 0 Alt= 0 #EPs= 2 Cls=ff Sub=ff Prot=ff

[000.001]: E: Ad=81 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: E: Ad=01 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: I: If#= 1 Alt= 0 #EPs= 3 Cls=ff Sub=00 Prot=00

[000.001]: E: Ad=83 Atr=03 MxPS= 10 Ivl=9ms

[000.001]: E: Ad=82 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: E: Ad=02 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: I: If#= 2 Alt= 0 #EPs= 3 Cls=ff Sub=00 Prot=00

[000.001]: E: Ad=85 Atr=03 MxPS= 10 Ivl=9ms

[000.001]: E: Ad=84 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: E: Ad=03 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: I: If#= 3 Alt= 0 #EPs= 3 Cls=ff Sub=00 Prot=00

[000.001]: E: Ad=87 Atr=03 MxPS= 10 Ivl=9ms

[000.001]: E: Ad=86 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: E: Ad=04 Atr=02 MxPS= 512 Ivl=0ms

[000.001]: I: If#= 4 Alt= 0 #EPs= 3 Cls=ff Sub=ff Prot=ff

[000.002]: tmp=/sys/bus/usb/devices/usb3/../driver, driver=../../../../../..

/bus/platform/drivers/xhci-hcd

[000.002]: qusb_noblock_open port_name = /dev/ttyUSB0

[000.004]: old software version: EG06ELAR04A04M4G

[001.005]: poll_wait events=POLLIN msec=1000 timeout

[001.005]: switch to 'Emergency download mode'

[001.007]: successful, wait module reboot

[ERROR] firmware directory is empty. Mount failed? Exiting...

[INFO] retarting modem 0

[INFO] Starting services:  

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It might be that your ISP is blocking SSH connections, and sshfs does not work.

You can try downloading the firmware from the link in this thread and follow instructions described there.

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When trying to update via USB Drive I get the following error. I am using CLI, using the following commands. What should I do next/different?

• opkg install modem_updater
• opkg install sshfs
• modem_updater -i 3-1 -p /mnt/sda1/Update/

The USB Drive contains the contents from here, with the PDF's removed and placed in an Update folder.

ERROR Message:

ls: /mnt/sda1/Update//update/firehose/: No such file or directory

[ERROR] No firehose folder found. Either the firmware is not right or you mu

st use legacy(fastboot) mode

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Zygimantas,

Using SSH in Mac Terminal achieves the same errors - both using WAN (firmware directory is empty. Mount failed? Exiting...) or vis USB (No firehose folder found. Either the firmware is not right or you must use legacy(fastboot) mode). SSH is working otherwise - access, packages download etc.

What do you recommend? I need to get the SIM 2 back up and operational.

Thanks.

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Zygimantas,

Using SSH in Mac Terminal achieves the same errors - both using WAN (firmware directory is empty. Mount failed? Exiting...) or vis USB (No firehose folder found. Either the firmware is not right or you must use legacy(fastboot) mode). SSH is working otherwise - access, packages download etc.

What do you recommend?

Thanks.

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Zygimantas - I wanted to say a big thanks on the Cell Locking guidance. This is a huge help! My primary provider has a faulty Mast which happens to have the best signal. Being able to lock to an alternative Mast will be invaluable. Thank you  

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Hello,

Would it be possible to arrange a remote via Anydesk to check with the modem update?