Block Mobile Network in Teltonika RUT900
Due some mobile network roaming issues one of my test SIM Cards is not able to use the network of T-Mobile here properly. The SIM Cards get a network attach to T-Mobile but the GPRS Activation fails. As soon as the SIM card is using O2 it works just fine.
I use a RUT900 Router for this and this has a Network blacklist in the firmware. But this does not work as expected since this only works once and if the router reconnects for whatever reason it end up in the T-Mobile network again.
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