Radio network capacity management

Radio network managers face an increasingly complex capacity management challenge. They must balance growing demand for ever-more sophisticated workforce communications against the limitations of a finite pool of radio channels. Compounding this is an increase in external competition for radio spectrum that continues to drive up radio license costs.

It is critical therefore that utilities choose a radio platform with the network capacity management features to ensure that maximum benefit can be delivered within the available spectrum now and in the future.

Tait DMR Tier 3 is the no compromise solution for network capacity management.

Dynamic channel assignment

Tait DMR Tier 3 is a highly spectrally efficient, trunked digital radio platform that offers utility organizations significant capacity advantages over non trunked radio systems.

Unlike conventional systems, trunked networks dynamically distribute the pool of available channels to users in real time, maximizing network capacity while mitigating peaks in demand and network interference issues.

Tait DMR Tier 3 dynamically assigns channels to user conversations, automatically and in real time. This dramatically reduces the total spectrum-per-user requirement and eliminates much of the channel planning workload for radio network administrators.

Dynamic voice and data channel sharing

The DMR Tier 3 platform offers utilities maximum flexibility in managing conflicting voice and data capacity requirements. The platform automatically assigns channels to carry voice or data in real time, depending on user demand. On other radio systems, long data messaging can "lock out" voice calls. Tait DMR Tier 3 can be configured to give priority to predefined call types depending on the needs of the operational situation. For example, by granting immediate priority to voice calls during an emergency, data traffic can be paused until priority voice calls finish.

The platform can dynamically adjust priority between various types of voice and data, making Tait DMR Tier 3 one of the most adaptive radio platforms available for utilities. Tait also supports a number of techniques allowing data to keep flowing even when voice has priority access.

Dynamic call types for Individual and Group calling

The DMR Tier 3 platform can dynamically assign different call types to each conversation depending on their nature. Calls involving two users are assigned an "individual call", and calls involving more than two users are assigned a "group call". Because the system assigns the most appropriate call type to each conversation in real time, the radio network spectrum can be optimally utilized around the clock, delivering maximum performance and user availability.

Priority call timers

There is nothing worse than a scarce resource being wasted. Radio system users in a long conversation deny others the use of valuable radio spectrum. DMR Tier 3 addresses this problem through priority call timers. Managed in the control system, these call timers discretely cut in to restrict call duration to an appropriate length, depending on current system loading or time of day.


Real time capacity management across a radio network requires an accurate understanding of users' physical location. DMR Tier 3 supports automatic radio registration procedures to maintain an accurate 24/7 picture of every user's location on the network. Tait trunked DMR networks use this information to dynamically control network capacity to achieve optimum call capacity where it is needed. An example is the allocation of radio channel resources only to sites where users who need to be in an urgent call are known to be located.

Call queuing

Natural disasters or extreme weather events drive unpredictable peaks in network traffic. Many radio systems will simply overload and begin denying users access to channels. This means critical calls may not connect. To avoid this type of system failure, DMR Tier 3 has a call queuing feature built in. This ensures that all calls are queued and will be connected, even during the most extreme local peaks in network usage.

Call priority and pre-emption

DMR Tier 3 is capable of dynamically assigning different priority levels to different types of traffic. Reverse Channel Signaling is a DMR specific technique that enables channels to be freed up for higher priority calls.

Another method to distinguish between low and high priority calls, is call priority and pre-emption protocols and both have been built in to the platform. In real emergencies, the DMR Tier 3 platform's ability to prioritize calls can save lives.

Easier administration and maintenance

As a trunked digital radio system, DMR Tier 3 is inherently easier to manage and maintain than non-trunked radio systems. DMR Tier 3 offers dynamic channel allocation without user or administrator intervention, workgroup based dialing to make group calling quicker and easier, and centralized management of network configuration and maintenance.

The unique Tait network management system provides usage reporting for more proactive and efficient network management.

DMR Tier 3 from Tait is the no compromise digital radio platform for network capacity management.

Why choose Tait DMR