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Integrated Services Digital Network (ISDN). Completion of Calls to Busy Subscriber (CCBS) supplementary service. Service description
STANDARD published on 1.8.1996
Designation standards: ČSN ETS 300357
Classification mark: 873575
Catalog number: 20198
Publication date standards: 1.8.1996
SKU: NS-171275
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: 2025-10-22 (Number of items: 2 239 879)
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