Push-to-talk or Press-to-Transmit is a means of conversation on half duplex communication lines which also includes a two-way radio that uses a button to change the voice reception mode to transmission mode.
An example of PTT is an Air Traffic Controller that talks on single radio frequency to all aircraft under his supervision. All aircraft pilots can hear each other’s voice and they have to wait for their turns to speak using words (procedure words) “over” and “out”
Other examples are Police Radio.
Push to talk over Cellular (PoC) is a service method for a cellular phone network that permits subscribers to use cellular phones as walkie talkie without any range limit. Connection time is too fast for PTT.
The most significant advantage of this PTT is that it allows user to talk to their group by pressing just one button.
PTT was used in 0G and PoC is used in modern cellular devices.
Cheers!!!
Ethan
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