A residential phone system allows for local control of call features from
any phone extension. The phone system may include a microcontroller that
communicates along the phone lines at a non-utilized frequency to several
extension phones in a residence. The microcontroller permits each phone
to control call features such as call waiting, conference calling,
paging, or other features. A control box may be included at any or all of
the extension phones to provide a convenient user interface to access the
call features.