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.
For example, an air traffic controller usually supervises several aircraft and talks on one radio frequency to all of them. Those under the same frequency can hear others' transmissions while using procedure words such as "break", "break break" to separate order during the conversation (ICAO doc 9432). In doing so, they are aware of each other's actions and intentions. Unlike in a conference call, they do not hear background noise from the ones who are not speaking. Similar considerations apply to police radio, the use of business band radios on construction sites, and other scenarios requiring coordination of several parties. Citizens Band is another example of classic push-to-talk operation.
The PTT switch is most commonly located on the radio's handheld microphone, or for small hand-held radios, directly on the radio. For heavy radio users, a PTT foot switch may be used, and also can be combined with either a boom-mounted microphone or a headset with integrated microphone.
Less commonly, a separate hand-held PTT switch may be used. This type of switch was historically called a pressel.[1][2]
In situations where a user may be too busy to handle a talk switch, voice operated switches are sometimes employed. Some systems use PTT ID to identify the speaker.
Manufacturers now make units specifically designed for PTT over cellular (POC or PoC).
Mobile phones
Push-to-talk over cellular (PoC) is a service option for a cellular phone network that enables subscribers to use their phones as walkie-talkies with unlimited range. A typical push-to-talk connection connects almost instantly. A significant advantage of PTT is the ability for a single person to reach an active talk group with a single button press; users don't need to make several telephone calls to coordinate with a group.
Push-to-talk cellular calls similarly provide half-duplex communications — while one person transmits, the other(s) receive. This combines the operational advantages of PTT with the interference resistance and other virtues of mobile phones.
Current use in mobile telephony
Mobile push-to-talk services, offered by some mobile carriers directly as well as by independent companies, adds PTT functionality to smartphones and specialized mobile handsets (hand portable and mobile/base station PTT Radio Terminals). In addition to mobile handsets, some services also work on a laptop, desktop, and tablet computers.
Smartphone and computer apps
Recent development in PTT communications is the appearance of apps on smartphones, some of which can function on multiple platforms. Wireless carrier-grade PTT systems have adapted to and adopted the smartphone platform by providing downloadable apps that support their PTT systems across many mobile platforms. Over-the-top (OTT) applications are not dependent on a specific carrier and nearly as fast as carrier implementations.
Push-to-Talk over Cellular Consortium Phase 2 Specifications and Documentation
Open Mobile Alliance - Push to talk over Cellular (PoC) - Architecture Candidate Version 2.0 – 26 February 2008
January 12, 2023
push, talk, confused, with, click, call, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, sc. Not to be confused with Click to call This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Push to talk news newspapers books scholar JSTOR February 2013 Learn how and when to remove this template message 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 Contents 1 History 2 Mobile phones 2 1 Current use in mobile telephony 3 Smartphone and computer apps 4 See also 5 ReferencesHistory EditFor example an air traffic controller usually supervises several aircraft and talks on one radio frequency to all of them Those under the same frequency can hear others transmissions while using procedure words such as break break break to separate order during the conversation ICAO doc 9432 In doing so they are aware of each other s actions and intentions Unlike in a conference call they do not hear background noise from the ones who are not speaking Similar considerations apply to police radio the use of business band radios on construction sites and other scenarios requiring coordination of several parties Citizens Band is another example of classic push to talk operation The PTT switch is most commonly located on the radio s handheld microphone or for small hand held radios directly on the radio For heavy radio users a PTT foot switch may be used and also can be combined with either a boom mounted microphone or a headset with integrated microphone Less commonly a separate hand held PTT switch may be used This type of switch was historically called a pressel 1 2 In situations where a user may be too busy to handle a talk switch voice operated switches are sometimes employed Some systems use PTT ID to identify the speaker Manufacturers now make units specifically designed for PTT over cellular POC or PoC Mobile phones EditPush to talk over cellular PoC is a service option for a cellular phone network that enables subscribers to use their phones as walkie talkies with unlimited range A typical push to talk connection connects almost instantly A significant advantage of PTT is the ability for a single person to reach an active talk group with a single button press users don t need to make several telephone calls to coordinate with a group Push to talk cellular calls similarly provide half duplex communications while one person transmits the other s receive This combines the operational advantages of PTT with the interference resistance and other virtues of mobile phones Current use in mobile telephony Edit Mobile push to talk services offered by some mobile carriers directly as well as by independent companies adds PTT functionality to smartphones and specialized mobile handsets hand portable and mobile base station PTT Radio Terminals In addition to mobile handsets some services also work on a laptop desktop and tablet computers Smartphone and computer apps EditRecent development in PTT communications is the appearance of apps on smartphones some of which can function on multiple platforms Wireless carrier grade PTT systems have adapted to and adopted the smartphone platform by providing downloadable apps that support their PTT systems across many mobile platforms Over the top OTT applications are not dependent on a specific carrier and nearly as fast as carrier implementations See also EditOMA Instant Messaging and Presence Service Push to type operation Telegraphy Click to callReferences Edit pressel Wordnik Definition of pressel Findwords com Push to Talk over Cellular Consortium Phase 2 Specifications and Documentation Open Mobile Alliance Push to talk over Cellular PoC Architecture Candidate Version 2 0 26 February 2008 Retrieved from https en wikipedia org w index php title Push to talk amp oldid 1124400954, wikipedia, wiki, book, books, library,
