Push-to-talk

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.

CB radio with push-to-talk microphone switch
Not to be confused with Click-to-call.
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This article uses material from the Wikipedia article Push-to-talk, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.