There were several benefits in using Tier III in this application:
1. Tier III makes more effective use of the available frequency spectrum than analogue or Digital DMR Tier II due to the fact that the system dynamically allocates channels to each user for the duration of each call. On a busy system, this significantly improves channel availability for radio users and maximises the available channel capacity. For a courier company with high call and voice traffic rates this has proven to be a big advantage and provides greater assurance for the users and controllers of being able to make and receive calls.
2. Tier III brings significant health and safety benefits over and above conventional analogue or DMR Tier II systems. The Tait radios have an emergency alert button which allows the user to alert a controller in the event of an emergency situation. If GPS is available in the radio units, individual location data can be sent back to a central controller to identify position of users on a map using the Crosswire system. This is useful for tracking purposes but also particularly important in an emergency situation. Unlike Tier II systems Tier III uses a dedicated data channel to report back GPS information to ensure that voice channels are not affected.
In the event of an incident Tier III offers priority on emergency calling and the potential for a designated accident or incident controller to take control and broadcast to all users, certain groups or individual users depending on their priority level. This level of control is not available in non Tier III systems
4. The Tait Tier III system allows for remote monitoring and configuration which means that operators can access the system even if they are not in the coverage area, offering clear benefits for business continuity. It also means that EARS can carry out regular maintenance checks and upgrades quickly and cost effectively providing the best support to their client.
5. The Tait Tier III system is very scalable allowing organisations to easily expand the system in the future. Because Tier III is much more efficient than analogue and DMR Tier II systems in the use of available channel capacity, generally less infrastructure is required to expand the system in future when adding additional voice capacity.