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Standards [CURRENT]

DIN IEC 60487-1

Methods of measurement for equipment used in terrestrial radio-relay systems; measurements common to sub-systems and simulated radio-relay systems; identical with IEC 60487-1:1984
Edition 1990-02

Standards [CURRENT]

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

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