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Integrated Services Digital Network (ISDN). User-to-User Signalling (UUS) supplementary service. Service description
STANDARD published on 1.1.1997
Designation standards: ČSN ETS 300284
Classification mark: 873581
Catalog number: 21231
Publication date standards: 1.1.1997
SKU: NS-171123
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
1.7.1998
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1.10.1999
1.8.2000
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