A:AnswerI use Basic Talk for landline phone service and it worked. However I had horrible clicking sounds on the speakerphone that were so annoying to me and the other parties that I had to stop using it. I have no idea if it's the phone or the phone service, or the two combined since the phone service is not AT&T, but my new phone works great so I suspect it's this phone. You might want to bear that in mind and keep looking.
A:AnswerYes. But the problem was not with either the power source or the phone line . The technician from Verizon determined that the problem was with the phone itself.
A:AnswerIt is NOT a 12 volt adapter, it is a 6 volts. the model supplies is a "VTPL switching power supply, model: vt04uuso6040." Plenty of used adaptors available on EBay, want new try Amazon.