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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 1.3.1994
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Designation standards: STN ETS 300121
Classification mark: 870121
Catalog number: 71382
Publication date standards: 1.3.1994
SKU: NS-540624
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: Slovak technical standard
Category: Technical standards STN
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