European digital cellular telecommunications system (Phase 2). Multi Party (MPTY) supplementary services. Stage 1 (GSM 02.84)
STANDARD published on 1.7.2002
Designation standards: STN ETS 300517
Classification mark: 870517
Catalog number: 20322
Publication date standards: 1.7.2002
The number of pages: 15
Approximate weight : 45 g (0.10 lbs)
Country: Slovak technical standard
Category: Technical standards STN