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M.560 : International telephone circuits - Principles, definitions and relative transmission levels

Recommendation M.560 (11/88)

Approved in 1988-11

Status : In force


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PDF Document PDF (acrobat)

109593 bytes 1990-02-23 E 15019 
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127500 bytes 1990-02-23 F 15019 

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Updated : 2001/09/10