ČSN ETS 300451-ed.1 (871521)

Business TeleCommunications (BTC). Ordinary quality voice bandwidth 4-wire analogue leased line (A4O). Connection characteristics and network interface presentation

NORM herausgegeben am 1.2.1997

Nur das Vorwort ist in der tschechischen Sprache -
Gedruckt (1.20 EUR)

The information about the standard:

Designation standards: ČSN ETS 300451-ed.1
Classification mark: 871521
Catalog number: 21364
Publication date standards: 1.2.1997
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN