Push to talk is often confused as being the same thing as a two way radio. While it is true that two way radios use push to talk communication (think walkie-talkies), push to talk or PTT is a feature that can be added on to a cell phone plan for use on your cell phone. Two way radios on the other hand, are simply two way radios, with no additional features.
Two way radios have utilized the push to talk feature for decades in a variety of settings. Until recently, two way radios have been used primarily by industrial type workers, emergency crews, and utility companies. And although the communication takes place on a secure channel, the conversation is not necessarily one kept under a shroud of privacy. When using push to talk through your cell phone provider, the communication can be as private as a regular cell phone call.
Using push to talk is much like the old days of playing with walkie-talkies with your friends around the neighborhood. Only now, when push to talk is used as an additional feature on your cell phone, it has the capability of maintaining communication to national, and international customers. And instead of crackly, indecipherable conversations...