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DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE

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Technical rule [CURRENT]

ITU-T Q.709
Signalling system no. 7 - Hypothetical signalling reference connection

Title (German)

Zeichengabesystem Nr. 7 - Hypothetische Zeichengabebezugsverbindung

Edition 1993-03
Original language English
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