ETSI TS 101 377-2-9
ETSI TS 101 377-2-9
GEO-Mobile Radio Interface Specifications; Part 2: Service specifications; Sub-part 9: Bearer Services (BS) supported by a GMR-2 Public Satellite Mobile Network (PSMN); GMR-2 02.002;
standard published 03/01/2001 by European Telecommunications Standards Institute