Firmware 1.12.3 on RUT240. It appears that setting up any SMS Events Reporting (even if its not enabled) in Status-Events Log-Events Reporting, stops the RUT240 from responding to SMS Utlities queries, such as 'status'.
I have SMS Utilities enabled with root password authorisation, so that I can get responses to Status etc SMS queries. I got responses to SMS queries as expected.
I then set up some Events Reporting, so I'd get SMS notification if the WAN Failover occured, but I didn't enable this. The RUT240 then stopped responding to any SMS queries I sent it. The log showed the SMS being received, but the RUT240 didnt respond.
If I enabled the Events reporting, I correctly got a notification SMS when the WAN failed over, but still no responses to any SMS queries.
If I deleted the Events Reporting entry I'd set up, the RUT240 started responding to the SMS queries again. Changing the SMS Utilities queries authorisation to 'No authorisation' or using a whitelist, made no difference.
When I get an RUT240 with an earlier firmware, I'll post whether it responds the same way.
I reflashed the firmware without keeping the settings, but this didnt help.