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Integrated Services Digital Network (ISDN); Subaddressing (SUB) supplementary service; Service description
STANDARD published on 1.11.1994
Designation standards: ČSN ETS 300059
Classification mark: 873506
Catalog number: 16746
Publication date standards: 1.11.1994
SKU: NS-170713
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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