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Integrated Services Digital Network (ISDN). Application of the ISDN user part of CCITT Signalling System No. 7 for international ISDN interconnections (ISUP version 1)
STANDARD published on 1.11.1994
Designation standards: ČSN ETS 300121
Classification mark: 877023
Catalog number: 16752
Publication date standards: 1.11.1994
SKU: NS-170823
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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