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Integrated Services Digital Network (ISDN). Three-Party (3PTY) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 1: Protocol specification
STANDARD published on 1.7.1999
Designation standards: ČSN EN 300188-1-V1.2.4
Classification mark: 877039
Catalog number: 55991
Publication date standards: 1.7.1999
SKU: NS-150990
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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Latest update: 2024-05-19 (Number of items: 2 902 277)
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