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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 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1999) modified]
STANDARD published on 1.5.2002
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Designation standards: STN EN 300356-1-V4.2.1
Classification mark: 870356
Catalog number: 20044
Publication date standards: 1.5.2002
SKU: NS-519108
Approximate weight : 300 g (0.66 lbs)
Country: Slovak technical standard
Category: Technical standards STN
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