Tell them to use their cellphones like everyone else does nowdays, or continue to go old school by getting up and yelling.
Easier instead of hardwired, just use plug in intercoms. But even those are going away, because most people have cellphones these days.
Catch is, you have to have cell service.
Easier instead of hardwired, just use plug in intercoms. But even those are going away, because most people have cellphones these days.
Catch is, you have to have cell service.