Hello again!
Sorry but been a bit of troubleshooting on and off for the last month. Trying to explain the problem below.
Not sure if I managed to upload the troubleshoot file, please verify if it was successful.
1/ My customer informed me that they had ordered a fixed IP address.
2/ That was not the case, but it was a mobile broadband subscription without a public IP, i.e. the router got a new IP address frequently.
3/ Now we have a fixed IP address and this verified by the operator.
4/ We have set the APN according to the operator's instructions.
5/ Still problem RUT955 has contact with the Internet between 2-6 hours and then shuts down. We power down the router so it starts up, then OK again for 2-6 hours.
6/ Right now I have installed another RUT950 with the same firmware RUT9_R_00.07.04 so that the customer can access their web server. Works very well (so far).
Best regards / Michael