Push-to-talk (PTT), also known as Press-to-Transmit, is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode. For example, an air traffic controller usually talks on one radio frequency to all aircraft under his/her sup...
Found on
http://en.wikipedia.org/wiki/Push-to-talk
Remember Push To Talk service are cellular and unlike the Land Mobile Radio services they mimic, are subject to inexpensive easily obtainable though illegal jamming devices which makes POC much more suited to mobile applications rather than site communications which can easily be compromised. ...
Found on
http://en.wikipedia.org/wiki/Push_to_talk
see PoC.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.
