MPT 1327/TNDS

TaitNet Data System (TNDS)

This builds on the solid base of the TaitNet trunked radio system, offering all of its flexibility and features. This solution is the beacon for future communications in the public transport arena. Demands and requirements for data, from operators, regulators and passengers, have risen dramatically over recent years and many operators now have the critical need to:

  • Monitor and provide timetable compliance
  • Improve bus headway by traffic light pre-emption
  • Deliver Real Time Passenger Information (RTPI)
  • Provide accurate information for inter-modal services

TNDS delivers this using a single in-bus radio unit to provide:

  • All the services of the trunking radio system
  • A regular update of data (AVL)
  • Short data bursts to pre-empt traffic lights or clear passenger signs

Existing radio systems are often unable to cope with the data speeds and volumes. This results either in buses having multiple radio systems on-board, or inconsistent and incomplete data being supplied. To deal with this situation, Tait used its knowledge and understanding of the market to develop a solution – TNDS.

This solution utilises advanced technological developments to provide a system which offers:

  • Capability of polling up to 900 vehicles per minute (15 per second)
  • Reliable transmission of data between vehicles, at-stop signs, control rooms and traffic lights
  • Voice communication on the same radio

TNDS offers an excellent solution for the data transmission challenges facing the industry going forwards, but also ensures that voice traffic can be accommodated on the same system.

TaitNet trunked (MPT 1327) radio systems

This remains the most popular solution for transport operators worldwide, because of the flexibility and efficiency it offers. Tait has a long and distinguished track record in trunking and offers a truly impressive array of system features. These include:

  • Wide range of terminal products (open standard)
  • Scalable infrastructure from single site to nationwide
  • Efficient deployment of radio channels
  • Voice and data combined on same system
  • Individual, group (team) or broadcast (route) calls
  • PSTN, PABX, and data interfaces
  • Call diversion and forwarding
  • Priority handling of emergency calls
  • A building block to TNDS
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