Other name | PTToC radio |
---|---|
Type | PoC device |
Core function | Push-to-talk [1] |
Introduced by | TYT |
Communication mode | half-duplex |
A PoC radio (short for push to talk over cellular radio [2] ), also known as PTToC radio, [3] is an instant communication device that is based on the cellular network. [4] It is a radio device that incorporates push-to-talk technology into a cellular radio handset. [5] It allows users to communicate with one or more receivers instantly, [6] in a half-duplex mode. [7]
Although a PoC radio is a walkie-talkie-like device, [8] there are substantial differences between them. [9] Compared to the latter, the former has a wider range of channels, covers a wider area, and does not require a license to transmit. [9] In addition, a PoC radio supports advanced functions, such as, video calls, multimedia messages, GPS location tracking, and emergency notifications. [10]
PoC radios are widely used in the industries of private security, logistics, hospitality, and rescue. The representative manufacturers of such equipments include Hytera [11] and ToooAir. [12] Mission-Critical PTToC (MCPTT) is also starting to be employed in sectors such as public safety, transportation, and utilities. [13]
The concept of PoC was introduced by U.S. telecommunications company Nextel in 1987. [14] The first commercial use of PoC radios was also started by the company in 2002. [15]
In June 2005, the Open Mobile Alliance rolled out an approved standard called "PoC 1.0". [16] In April 2020, Hytera presented a PoC radio named PNC550, equipped with a 5-inch touchscreen that supports full operation using gloves. [17]