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STN ETS 300139 (870139)

Integrated Services Digital Network (ISDN). Call Hold (HOLD) supplementary service. Service description

STANDARD published on 1.2.1994

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The information about the standard:

Designation standards: STN ETS 300139
Classification mark: 870139
Catalog number: 71262
Publication date standards: 1.2.1994
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Slovak technical standard
Category: Technical standards STN