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Integrated Services Digital Network (ISDN). Signalling System No. 7 (SS7). ISDN User Part (ISUP) version 4 for the international interface. Part 2: ISDN supplementary service [ITU-T Recommendation Q.730 (1999) modified]
STANDARD published on 1.3.2003
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Designation standards: STN EN 300356-2-V4.2.1
Classification mark: 870356
Catalog number: 90080
Publication date standards: 1.3.2003
SKU: NS-519129
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: Slovak technical standard
Category: Technical standards STN
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Latest update: 2025-03-13 (Number of items: 2 232 199)
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