Digital cellular telecommunications system (Phase 2) (GSM); Procedures for call progress indications (GSM 02.40)
STANDARD published on 15.1.1996
Designation standards: ETSI ETS 300512-ed.2
Publication date standards: 15.1.1996
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: European technical standard
Category: Technical standards ETSI