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 that can both transmit and receive radio waves (a transceiver), unlike a radio broadcasting, broadcast receiver which only receives content. It is an audio (sound) transceiver, a transmitter and radio receiver, receive ...
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 rad ...
/signaling systems, usually in commercial and public safety radio systems.
PTT ID features are included in
MDC-1200
MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system using audio frequency shift keying, (AFSK). MDC-600 uses a 600 baud data rate. MDC-1200 uses a 1,200 baud data ...
and other signaling systems.
{{Two-way radio
Radio technology