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DIN ETS 300807
Integrated Services Digital Network (ISDN) - Audio characteristics of terminals designed to support conference services in the ISDN; English version ETS 300807:1997
Edition
1998-07
DIN ETS 300746
Transmission and Multiplexing (TM) - Synchronous Digital Hierarchy (SDH) Network protection schemes - Automatic Protection Switch; APS protocols and operation; English version ETS 300746:1997
Edition
1997-12
97/521/EGEntsch
Commission Decision of 9 July 1997 on a common technical regulation for the attachment requirements for the terminal equipment interface for connection to 2 048 kbit/s digital structured ONP leased lines (Text with EEA relevance)
Edition
1997-07-09
97/520/EGEntsch
Commission Decision of 9 July 1997 on a common technical regulation for the attachment requirements for the terminal equipment interface for connection to 2 048 kbit/s digital unstructured ONP leased lines (Amendment 1)
Edition
1997-07-09
