What Happens If the Internet or Power Goes Down?

Calls go to a backup number you choose, such as a cell phone, whenever your phones can’t be reached, and anyone with the Telonium app on their mobile keeps taking calls over their cell signal. If you haven’t set a backup number, callers reach voicemail.

911 from desk phones won’t work until power and internet are back. For an emergency, use a mobile phone’s own dialer.