OEVE/OENORM EN 300392-3-15 V1.2.1
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 15: Transport layer independent Additional Network Feature, Mobility Management (ANF-ISIMM) (ETSI EN 300 392-3-15 V1.2.1 (2020-04))