PTT ID, or Push-To-Talk ID, is a generic term for an
automatic number identification (ANI)-like system used in
two-way radio
A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, in contrast to a broadcast receiver, whi ...
systems. It provides identification of the transmitting radio over the air, and is commonly used in
selective calling
In a conventional, analog two-way radio system, a standard radio has ''noise squelch'' or ''carrier squelch'', which allows a radio to receive all transmissions. Selective calling is used to address a subset of all two-way radios on a single ra ...
/signaling systems, usually in commercial and public safety radio systems.
PTT ID features are included in
MDC-1200 and other signaling systems.
Radio technology
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