RINGTONES!

I work in an office which has an open floor plan. There are no cubicle walls. Before moving to this building we were given new etiquette rules and ways to be quiet and considerate of our coworkers. I can hear every phone call within 5 desks of mine. Many of my coworkers do not leave their cell phones on vibrate or silent. All day long there is a barrage of ringtones going off. I think its time to have a review of open office etiquette.