Are there any battery backup options for those of us on FTTN? It looks like the ATT supplied router can accept a battery.
I don't think that'll work - my dim recollection is that it just backs up the voice jacks on that unit, which we don't use.
Any medium sized UPS should do, for your router, telephone adaptor and any extra WiFi equipment you might have. I'd recommend this same setup for any of our services, Fusion, Fiber or IP Broadband. The equipment does not draw a lot of power, but a medium size unit will last longer than a very small one.
Sonic does offer a battery backup for our ONT (the small white fiber gateway that outputs Ethernet and POTS voice), with an eight hour and a 24-hour version available, but this does not back up the router/Wi-Fi equipment, so you'd need a second unit anyway. Maybe better to just to plug both devices into the one unit if they happen to be located next to each other.