Is Telo failure always the cause of this problem? There is only one phone on the house wiring, so the problem cannot be due to a phone being off the hook. I checked the Network Interface Box on the outside of the house and confirmed I am no longer connected to the incoming AT&T lines. Is there anything I should test before replacing this unit?
Thanks for any advice on this.
Old ReplayTV, TiVo, heart monitor, telephone modem, clandestine phone in kid's bedroom, TV that displays incoming caller ID.
Is the phone you are using a modern phone or an ancient phone with real bells? If it's the latter it's time for a modern phone.
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx
We only have one wired phone in the house. No modems, no medical equipment, etc.Phones that display "line in use" use the VOLTAGE on the line to determine when to display it. Old landline service provided 48 volts DC when the line was idle. PBX systems (and Ooma) provide about half that. When a phone on the line is off hook the voltage drops way down triggering the indicator.
If you are getting this indication when all phones are on hook, it indicates a bad phone or a bad Telo.