Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS) supplementary service; Functional capabilities and information flows
STANDARD published on 15.3.1996
Designation standards: ETSI ETR 285-ed.1
Publication date standards: 15.3.1996
The number of pages: 62
Approximate weight : 186 g (0.41 lbs)
Country: European technical standard
Category: Technical standards ETSI