#Internet Protocol/Cellular protocol
Communication to central station is permitted to be via IP. Ref NFPA 72 other technologies.
However when considering using IP as your sole means of communications the reliability of the Internet Service Provider (ISP) should be researched. Often the existing infrastructure is not sufficient to meet min requirements for backup power. I.E. from the pole to the destination, the path the signal goes should be reliable and and have redundant power capability sized appropriately. Lots of ISPs do not have batter back ups on their power injectors or correctly sized UPSs in their backbone.
Long story short it is always good to do your homework.
I frequent recommend to our customers a IP/GSM combo communicator. It basically is a modem for your IP path and GSM is a cell phone. They are fairly new but I've found them to be very reliable. As with anything you are at the mercy of the communications company. be it an ISP, Verizon, AT&T, etc... the reliability of your signal is only as good as the infrastructure that it rides on. NFPA has little jurisdiction there.
Thanks so much for your very insightful reply. Exactly the kind of information I was seeking from this group.
Check with the AHJ, some may allow it, and some may not.
Plus check which 72 edition the ahj has adopted.
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