I haven't really looked into the rate of comms failures from the IP panels. Automation will log most of these, and alert the dealer about it in an automated report, so its effect on call center operations is minimal.
We currently use the 685 receiver in conjunction with the 7810iR, although there are plans to change that. We receive Alarmnet signals by IP first, then by cellular radio, and finally by dial up. The radio and dial up require a 685 so we keep them in service.
I think that the biggest reason that dealers are hesitant is because of the known reliability of POTS compared to residential broadband. However I think that IP backed up by cellular radio would be a satisfactory system.
We currently use the 685 receiver in conjunction with the 7810iR, although there are plans to change that. We receive Alarmnet signals by IP first, then by cellular radio, and finally by dial up. The radio and dial up require a 685 so we keep them in service.
I think that the biggest reason that dealers are hesitant is because of the known reliability of POTS compared to residential broadband. However I think that IP backed up by cellular radio would be a satisfactory system.