NOTE: The next document is too old, but who knows maybe it will be also useful:
TETRA PMR, AND ITS POTENTIAL RELATIONSHIP WITH UMTS (1998)
This paper reviews the service which will be provided by TETRA (Terrestrial Trunked Radio) based
PMR systems and discusses how this service could be pragmatically integrated into UMTS access
and service models. The scenario for convergence with UMTS is discussed and a possible evolution
path, to realise TETRA as an integrated part of communications with the 2lSt Century is outlined.
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