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Private Telecommunication Network (PTN). Specification model and information flows. Call intrusion supplementary service
STANDARD published on 1.8.1996
Designation standards: ČSN ETS 300425
Classification mark: 879527
Catalog number: 20121
Publication date standards: 1.8.1996
SKU: NS-171505
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
General rules. Telecommunications servicesSwitching and signalling systems
1.4.1995
1.11.1994
1.8.1996
1.8.1996
1.8.1996
1.11.1996
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