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ITU-T Q.451

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ITU-T Q.451

Multifrequency signalling equipment; Definitions

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Author ITU
Editor ITU
Document type Standard
Format File
ICS 01.040.33 : Telecommunications. Audio and video engineering (Vocabularies)
33.040.50 : Lines, connections and circuits
Number of pages 2
Year 1980
Document history
Country Switzerland
Keyword CCITT Q.451;ITU-T 451;451