Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Message Waiting Indication (MWI) supplementary service
STANDARD published on 1.11.1999
Designation standards: ČSN EN 301255-V1.1.1
Classification mark: 879544
Catalog number: 57196
Publication date standards: 1.11.1999
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN