Most people think it's impolite to talk on a cell phone when you are eating in the restaurant or maybe in a quiet place like library. In cell phone etiquette, here's what the experts recommend: keep your cell phone on vibrate as much as possible; if you do need to talk, move at 10 feet from other people, and keep those conversations as short and quiet as possible. Another answer to this problem is the Cell Zone, a sound resistant phone booth made by Salemi Industries. So the cell phone user can receive cell phone call with a bit of privacy and stops disturbing others in your establishment. The Cell Zone is made available for people to use free of charge and only making revenue by placing ads on the booth.