The Ooma Telo LTE works during power outages for ultimate reliability and safety. It works in places without broadband or where Internet service is spotty. It’s ideal for vacation homes, assisted living facilities, garages, and in-law suites. Whether for your own home or for a loved one, there’s just no replacing the peace of mind it provides. The Ooma Telo LTE battery backup, a Li-Ion power bank battery, provides peace of mind that your phone will work during power outages. Location-specific 911 gives first responders your address automatically, even if you can’t speak or the person calling doesn’t know where you are. It includes Ooma Premier service, letting you block unwanted calls, get a second line, enable do-not-disturb feature, voicemail-to-email forwarding, free calling to Canada and Mexico, and much more. It works only in the US. The Ooma Telo LTE with Battery Backup works only with Ooma phone service, subscription required.