Greetings,
We are currently running the TRB245 as an SMS gateway - we use two sim cards with two providers.
Sim switch is configured to only occur on 'network down' and SIM2 will attempt to switch back to SIM1 (default) after 15 Minutes.
APN 01 and 02 (Correct providers) are whitelisted on SIM1 and SIM2 respectively.
We noticed that on sim switches, sometimes the mobile modem (and webinterface) will hang for a very long time, and there won't be any mobile connection after the wait - a Mobile Modem restart fixes the issue.
Regards,
--Jan Mazur