Unfortunately, I have massive problems with 14 RUT955 modems that we have purchased.
They are installed in an industrial application of ours, but currently still in internal test runs.
Due to the extensive changelog, we have upgraded them to the latest firmware RUT9_R_00.07.02.3
Unfortunately, we do have non reproduceable defects of one or more of the following problems again and again:
· 4G Modem
1. The modem recognizes the SIM card, successfully connects to the provider, but the connection status is then set to "Disconnected".
A data connection is therefore not established.
This can be fixed by one or more restarts of the modem and does not occur anymore, at least as long as you do not take the modem off the network again
or restart it.
· LAN with DHCP
1. Again and again, it happens that the DHCP server does not output IP addresses. Connected devices therefore do not work.
This can be fixed by restarting the modem but occurs again at irregular intervals.
2. An entire RJ45 port becomes inactive. The LEDs for the connection then no longer light up on both sides. If you connect the attached device to another
port, the connection is working properly. If you go back to the "defective" port, nothing works again.
This can be fixed by restarting the modem but occurs again at irregular intervals.
· SNMP
1. Despite reading the current RUT955 Wiki it was not possible for us to read data via SNMP because most requests came back to the feedback that the respective data point does not exist.
Even requests that basically worked before, for example, were suddenly no longer existent an hour later.
We don't have a solution for this, which is why we decided to switch to MODBUS.
· Modbus
1. Most requests are completely problem-free, to the point where only data garbage comes as an answer. This goes so far that our external Linux application (PC based, not on the router) starts to reboot itself in an endless loop because
the received Modbus data cannot be interpreted.
· System
1. Flash memory
Although all 14 modems were upgraded in the same way and then the settings were uploaded as a file, the display of the flash memory is very different.
It ranges from 30 to over 99.7%, but from our point of view there is no connection between the full memory and the problems mentioned above.
2. Uploading settings to the modem
The settings secured from a modem can sometimes not be transferred to identical modems because the system rejects them as corrupt.
After a restart, however, this is sometimes possible again. All modems have the same firmware version.
3. Login LOOP:
On the login screen of the modems you must enter the username and default password when they are first put into operation. Then you will be asked to change the password,
otherwise you will not get into the system. That's what I did, after which I was thrown back into the first login screen. Until a restart, this always went in circles again and again.
I tried out in the current browsers Firefox and Edge.
For these reasons, it is unfortunately not possible for us to install the devices as desired, as they will be in operation on "unmanned" places where someone cannot permanently restart the system.
I am looking out for someone of Teltronika for technical support/help.