Integrated Services Digital Network (ISDN); Message Waiting Indication (MWI) supplementary service; Service description
STANDARD published on 28.5.2001
Designation standards: ETSI EN 300650-V1.2.1
Publication date standards: 28.5.2001
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: European technical standard
Category: Technical standards ETSI