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Automatic telephone exchanges. General requirements for interworking between digital and cross-bar automatic telephone exchanges
STANDARD published on 1.7.1991
Designation standards: GOST 28449-90
Publication date standards: 1.7.1991
SKU: NS-390971
The number of pages: 62
Approximate weight : 186 g (0.41 lbs)
Country: Russian technical standard
Category: Technical standards GOST
1.1.1990
1.7.1978
1.1.1979
1.7.1981
1.7.1983
1.1.1991
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