Private Telecommunication Network (PTN); Inter-exchange signalling protocol; Call transfer supplementary service
STANDARD published on 29.11.1993
Designation standards: ETSI ETS 300261-ed.1
Publication date standards: 29.11.1993
The number of pages: 53
Approximate weight : 159 g (0.35 lbs)
Country: European technical standard
Category: Technical standards ETSI