A:AnswerOnly the base unit with the answering machine needs a phone wall jack in addition to an electrical outlet. The other 2 handsets only require an electrical outlet to plug into.
A:AnswerUse Quiet Mode (see User Manual) to silence the phone for 1 to 12 hours. The answering system will take calls and record messages without broadcasting them. Quiet Mode will go off automatically at the end of the time period you specify, or you can turn Quiet Mode off manually.