Push-to-talk (PTT) is a communication feature that allows users to transmit voice messages instantly by pressing a button. This technology is commonly used in two-way radios, walkie-talkies, and some smartphone applications. When the button is pressed, the device activates the microphone, enabling the user to speak, while releasing the button stops the transmission. PTT is popular in various industries, including emergency services, construction, and transportation, where quick and efficient communication is essential. It provides a simple and effective way to communicate without the need for dialing phone numbers or waiting for a call to connect.