Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 2: General protocol specification [ITU-T Recommendation Q.921 (1993), modified]
STANDARD published on 15.11.1995
Designation standards: ETSI ETS 300402-2-ed.1
Publication date standards: 15.11.1995
The number of pages: 29
Approximate weight : 87 g (0.19 lbs)
Country: European technical standard
Category: Technical standards ETSI