Integrated Services Digital Network (ISDN); Freephone (FPH) supplementary service; Service description
STANDARD published on 15.3.1996
Designation standards: ETSI ETS 300208-ed.1
Publication date standards: 15.3.1996
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: European technical standard
Category: Technical standards ETSI