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System Architecture of ACCESSNET-T IP

Flexibility for tailor-made TETRA solutions: The unique modular system design of the TETRA radio system ACCESSNET®-T IP enables radio solutions exactly in line with your requirements. The system design permits both distributed and also centralized architectures for flexible adaptation of the TETRA system to customer wishes.

In centralized systems, switching of voice and data as well as the transition to external networks (gateways) such as PABX/PSTN are implemented at a central point in the system. The centralized switching architecture is the classical model in the world of telecommunications.

The distributed version of the ACCESSNET®-T IP enables greater flexibility in designing the system by being able to implement routing functions and gateways at any points in the system. For example, the software-based switching function can be operated on a dedicated server or directly on a base station. Apart from the increased flexibility, the distributed architecture offers an increased robustness of the systems against the failure of individual sites.

Features of the distributed switching function

  • No separate or proprietary switching hardware in the network
  • Maximum robustness against faults in the transport network due to distributed intelligence
  • Rapid reorganization of base stations and distribution into sub networks possible
  • Suitable for rapid deployment scenarios for fast implementation of TETRA systems in crisis situations or in the event of disasters, for example
  • Flexible provision of interfaces to external systems, even within the base station

Features of the centralized switching function

  • Commercially available server for software-based switching function
  • Central telephone and application interfaces with high capacity
  • Maximum availability of the centralized node (IPN) by means of redundant server architecture (geographical redundancy possible)
  • Redundant connection of PABX and applications
  • Interfaces with high capacity – software functions can be combined on powerful servers
  • Optimized bandwidth "of the last mile" to the base stations

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