Integrated Services Digital Network (ISDN); Support of CCITT Recommendation X.21, X.21 bis and X.20 bis based Data Terminal Equipments (DTEs) by an ISDN Synchronous and asynchronous terminal adaptation functions
STANDARD published on 31.12.1990
Designation standards: ETSI ETS 300103-ed.1
Publication date standards: 31.12.1990
The number of pages: 106
Approximate weight : 349 g (0.77 lbs)
Country: European technical standard
Category: Technical standards ETSI