Tait DMR Tier 2 FAQs – Part I

Tait DMR Tier 2 FAQS - Part 1Over the last few weeks, we have been covering some technical aspects of our DMR Tier 2 solution like Connecting DMR Tier 2 with a Voice Recorder, Console and AVLThe layout of a Multi-Site Tait DMR Tier 2 network and How to set up the Tait DMR Tier 2 Node. During this time, we have received a few inquiries on our DMR Tier 2 solution and have decided to also answer them on our blog. This will be done in two parts. In the first part this week, we will discuss the basics of the Tait DMR Tier 2 solution and how its features compare to the our DMR Tier 3 solutions. Next week, we will go into more detail like interoperability, location services, encryption and specifications.

Q. What does the Tait DMR Tier 2 solution consist of?

This development has provided a stand-alone Tier 2 repeater, based on the world-class TB9300 base station. By utilising a powerful node, these base stations can be IP connected to form a multi-site network. With the existing DMR Tier 2 terminals, these base station configurations can create conventional communications solutions.

Q. Why should I buy a Tait DMR Tier 2 base station when I can get a cheaper unit from another vendor?

Tait has built its reputation designing and manufacturing high-performance base station equipment. The TB9300 exceeds or matches all other DMR Tier 2 base stations in terms of sensitivity, selectivity and intermodulation performance. This means:

  • the user gets extended talk-in (uplink) range as well as significantly increased resistance to interference,
  • when connected by an IP link, the TB9300 can be programmed, monitored or used as a narrow-range spectrum monitor via a web-based interface,
  • it has a Power Management Unit (PMU) which provides multiple power source options, providing protection from surges and power sags that can occur on remote sites.
  • it is easily upgraded with very little effort to Tait DMR Tier 3, which puts powerful trunking options within easy reach,
  • channel partners can more easily – and more cost effectively – maintain the system via superior, built-in diagnostics,
  • DMR Tier 2 terminals from different manufacturers can operate, on Tait MR Tier 2 base stations due to the Tait commitment to open standards.

Q. What is the difference between DMR Tier 2 and Tier 3?

DMR Tier 2 is conventional, and Tier 3 is trunked.

DMR Tier 2 is a digital replacement for the many conventional analog systems still in service. This may be only a single, site-located base station providing communications for a small fleet. Or it may cover a wide area with a small number of users.

DMR Tier 3 trunking systems replace existing MPT1327 analogue networks used by PAMR operators and large organisations such as utilities, mines and transport. DMR Tier 3 provides significantly greater capacity, both in terms of base stations and the number of users.

Tait offers Tier 3 as well as the new Tier 2 solutions. The feature matrix shows the differences between the Tait platform offerings:

Tait DMR FeaturesDMR Tier 2
DMR Tier 3
DMR Tier 3
DMR Tier 3
Reciter capacity18*4241,000
Site capacity6*16250
Node capacityA node is required for interface or multisite applications 0120
High availability (redundant node)NoNoNoYes
Talk groupsYesYesYesYes
Status messagingYesYesYesYes
Text messagingNoYesYesYes
Caller IDYesYesYesYes
Emergency call pre-emptionYesYesYesYes
Call options include:
Emergency callsYesYesYesYes
Broadcast callsYesYesYesYes
Priority callsNoYesYesYes
Divert own callNoNoYesYes
Status callYesYesYesYes
Group callsYesYesYesYes
Individual calls privateYesYesYesYes
Calls to PSTN/PABXNoNoYesYes
Four access priority levelsNoNoYesYes
Terminal authentication and device registrationNoNoYesYes
Dynamic site assignmentNoNoYesYes
Critical site assignmentNoNoYesYes
Stun (selective radio inhibit)YesNoYesYes
Call queuingNoNoYesYes
Dynamic re-groupingNoNoYesYes
Automatic Vehicle LocationYesNoYesYes
Statistic recordsYesYesYesYes
Digital Console connectionsYes (via node)YesYesYes
AIS/SIP Licences for Dispatch connectionsYesNoYesYes
Frequency bands: VHF, UHF, 700-800, 900MHzYesYesYesYes
GridLink (SCADA over DMR)NoNoYesYes

To ensure that you do not miss out on Part II of our DMR Tier II FAQs, remember to subscribe to the blog.

Read more about Tait’s DMR Tier 2 and Tier 3 solutions.

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