The user requirements contained in this URS are described in non-technical terms and are based on an analysis of the results for air interface enhancements from the TETRA Release 2 Market Questionnaire (see Bibliography)@ described in TR 102 021-1 [1]@ clauses 4.2 and 4.3. The present document provides the user requirements for TETRA intenvorking and roaming. The present document is applicable to the specification of TETRA Release 2 equipment.
TR 102 021-5-2002由ETSI - European Telecommunications Standards Institute 发布于 2002-05-01,并于 2014-04-02 实施。
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