I want for all my landline phones in the house to work with my Ooma telo. I’ve checked out the directions online, and I can disconnect phone line on outside box, not a problem. I have a corded phone in the same room as my computer, which goes to the wall jack. The Ooma directions say the Ooma device gets plugged into the wall jack. So,,,,,, where does my phone jack get plugged into? There’s only one phone jack on the Ooma.
I hope all this makes some sense.
If your old phones are really old and have real bells that can be a problem. The Telo supports 5 REN (ringer equivalence number). Modern phones have electronic ringers and have a REN in the 0.1 range. Ancient phones with real bells can have a REN in the 1, 2 or 3 range. If the label on the phone doesn't specify the REN, you will probably have trouble with phones not ringing.
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx