Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 1: General aspects [ITU-T Recommendation Q.920 (1993), modified]
STANDARD published on 15.11.1995
Designation standards: ETSI ETS 300402-1-ed.1
Publication date standards: 15.11.1995
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: European technical standard
Category: Technical standards ETSI