How does a radio trunking system work?

When a trunked radio user wishes to communicate with another user or group, the computer automatically assigns them the first free available channel to make each call. The underlying principle of trunking is that not all users or groups who need to communicate in a channel will do so at the same time.

What does trunking mean on a radio?

A trunked radio system is a two-way radio system that automatically assigns frequency channels to groups of user radios. Hence, it allows talk groups to conduct many conversations efficiently. Due to its characteristics, the trunking system is famous among police, government entities, and other municipal services.

What is a radio talkgroup?

“Talkgroup” is a generic term that refers to virtual radio channels created for/by a Trunked Radio Systems(TRS).

What is P25 trunking?

The P25 trunking is a separate channel that is designated as the control resource and is different from the traffic channel in that it functions as a resource allocation and digital communication message bearer and handler between the RFSS (RF Sub-System) and the SU (Subscriber Unit).

What is trunked radio scanners?

This is exactly how a trunked radio system works: All users are in one queue and get assigned the next available channel. Instead of having a separate frequency for the FD, one for the PD and another for the ambulance, they just go to the next channel that isn’t being used.

What is DMR on a scanner?

DMR stands for Digital Mobile Radio. It is a digital voice and data protocol that can be used unlicenced or commercially. You can peruse a standards document if you like. One of the major issues preventing you from using just any scanner from tuning to DMR is that the vocoder being used is AMBE, which is proprietary.

What is a TalkGroup on a scanner?

Talkgroups. A ‘talkgroup’ is an assigned logical group of users on a trunked radio system. Unlike a conventional radio which assigns users a certain frequency, a trunk system uses a number of frequencies allocated to the entire system.

What is TETRAPOL technology?

Airbus Defence and Space is the main supplier of this technology. TETRAPOL is a fully digital, FDMA, professional mobile radio system for closed user groups, standardizing the whole radio network from data and voice terminal via base stations to switching equipment, including interfaces to the Public switched telephone network and data networks.

Is the tph900 a TETRAPOL?

The TPH900 belongs to the Tetrapol product family whose earlier brand names include EADS Matra, Matra radio, EADS Tetrapol, and Cassidian Tetrapol. Smartphones with Tetrapol? See the TPH900 presented on video.

What is atttetrapol?

TETRAPOL is a fully digital, FDMA, professional mobile radio system for closed user groups, standardizing the whole radio network from data and voice terminal via base stations to switching equipment, including interfaces to the Public switched telephone network and data networks. End-to-end encryption is an integral part of the standard.

Why hybrid TETRAPOL and LTE network?

A hybrid Tetrapol and LTE network is the preferred solution to meet the needs for reliable, mission critical communications and for new multimedia services. This white paper discusses the evolution of mission critical communications and the options there are for mission critical mobile broadband.