ÖVE/ÖNORM EN 301842-2 V1.7.1:2015-06
Действует
VHF air-ground Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 2: General description and data link layer (ETSI EN 301 842-2 V1.7.1 (2015-04)