Landline telephone use 12v?

Question

Landline telephone use 12v?

Answer 1

If its a phone system then yes, but if its just a phone set settle in with 6v or 9v.

Answer 2

slightly less then that for off hook operation...

on hook voltage is around 48VDC

ringing voltage is around 90VAC

Answer 3

Depends on the telephone manufacturer.

I believe telephone power adapters"typically" range between 6 to 12v.

My Panasonic cordless phones operate on 9vdc input.