Firmware 2.04.3. Under Administration-User and Recipients-Phone Groups, the RUTX11 only allows 20 phone numbers to be added to a single group (by design I suspect). The RUT240 doesnt have such a limit, and I'd prefer the RUTX11 (which is much more powerful) to allow at least 30 (or even 50) numbers if possible?? This is important as you can only choose 1 phone group to be authorised to send SMS queries to the router. If you could choose more than 1 group, then the '20 phones per group limit' wouldnt be an issue.