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Definition of "PTT" |
Push-to-talk, post telephones and telegraphy authority , Partial Thromboplastin Time, Push-to-Talk, Push-To-Test, postal telephone and telegraph, / Push to talk 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. / Data Carrier Detect is a control signal present inside an RS-232 serial communications cable that goes between a computer and another device, such as a modem. |
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