1) Reconfigurable (possibly SDR) Bridge Base stations

    • Low cost → Short-medium term deployment
    • Highly flexible → Low maintenance cost
    • Centralised → Easy to manage & upgrade

    2) Reconfigurable (possibly SDR) Terminals

      • Decentralised → Reduced complexity
      • Less flexible (Size, Weight & Power limitations)
      • Agent training required

      3) A Core Network Layer

        • Not replacing current infrastructures
        • Agent training not required
        • Does not enable interoperability at same location

        4) A common Wireless Standard (e.g. TETRA, TETRAPOL or APCO­25)

          • High cost
          • Agent training required
          • Technologically advanced
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