talk to a particular individual, you can send a call to voice mail. the person calling will have the option to leave a message, and you won't have to speak with him directly. you can make a phone call go straight to voice mail if you set your cell phone to do so beforehand. if the person is already calling, you can send him to voice mail, though he will hear a ring or two on his end first.
it is possible to set a cell phone to ring straight to voice mail.
turn off your cell phone. if your phone is powered off, all calls will be sent directly to voice 