ETSI PRETS 300 392-3-3-1999 Terrestrial Trunked Radio (TETRA); Voice Plus Data (V+D) Part 3: Interworking at the Inter-System Interface (ISI); Sub-Part 3: Additional Network Feature Group Call (ANF-ISIGC)
European Telecommunications Standards Institute (ETSI)
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ETSI PRETS 300 392-3-3-1999
ETSI PRETS 300 392-3-3-1999 history
1999ETSI PRETS 300 392-3-3-1999 Terrestrial Trunked Radio (TETRA); Voice Plus Data (V+D) Part 3: Interworking at the Inter-System Interface (ISI); Sub-Part 3: Additional Network Feature Group Call (ANF-ISIGC)