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R.77 : Use of bearer circuits for voice-frequency telegraphy

Recommendation R.77 (11/88)

Approved in 1988-11

Status : In force


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PDF Document PDF (acrobat)

85619 bytes 1990-04-19 E 15309 
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PDF Document PDF (acrobat)

96277 bytes 1990-04-19 S 15309 
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PDF Document PDF (acrobat)

99257 bytes 1990-04-19 F 15309 

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Updated : 2001/09/10