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A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup ) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...
MPT 1327 [1] is an industry standard for trunked radio communications networks.. First published in January 1988 by the British Radiocommunications Agency, and is primarily used in the United Kingdom, Europe, South Africa, Australia, New Zealand and China.
When a radio registers on a site, whether it is a home or roam site, it is also given an "almanac" of nearby neighbor site frequencies via DFA broadcast (direct frequency assignment) allowing radios the ability to Roam in large Systems bigger than the Seed List capability or when System Frequency/Channel changes have occurred without having to ...
Like any trunked system, LTR MultiNet allows users to be grouped to virtual channels on a system backbone. The system backbone consists of repeaters configured to support the LTR protocol. The virtual channels, called system and group, are controlled by the system electronics. In an LTR system, the electronics that set up communications between ...
The next diagram illustrates where a given TETRA radio cell initial selection. The initial cell selection is performed by procedures located in the MLE and in the MAC. When the cell selection is made, and possible registration is performed, the mobile station (MS) is said to be attached to the cell.
Software for system managers and radio monitors alike has been developed outside of the vendor. ETrunker is a modification to the Trunker code to work on the EDACS control channel. Users of the software can monitor and log complete system activity. See the Trunker Site for more info.
Trunking in telecommunication originated in telegraphy, and later in telephone systems where a trunk line is a communications channel between telephone exchanges. Other applications include the trunked radio systems commonly used by police agencies. [1] In the form of link aggregation and VLAN tagging, trunking has been applied in computer ...
In radio communication, a control channel is a central channel that controls other constituent radios by handling data streams. It is most often used in the context of a trunked radio system , where the control channel sends various data which coordinates users in talkgroups .