we're having a Vodafone M2M-Sim in Germany which is capable for roaming in German Telekom and O2 network. However it prefers Vodafone connections, even if it's only 2G. Therefore were forcing the modem sometimes in Telekom or O2 networks by setting the operator code manually.
However sometimes we have to do this by remote, with trial and error. So if we force it into Telekom networks and it isn't available on site, the remote connection is lost.
That's why we want to work with Connection mode Manual-auto. So we put in operator code for Telekom/O2 and if it fails to connect we want it to fall back to Vodafone.
This functionality doesn't work for us. I tested it with the lastest Fw 7.2.3 and legacy 6.9.2
For testing purposes i entered a non-existing operator-id (123456). However it never switches back to Vodafone. Please see screenshots attached.
How can i fix this?
Edit: Troubleshoot file attached
Edit 2: Troubleshoot file with new modem firmware added (troubleshoot-Teltonika-RUT955.com-2022-08-02.tar.gz)