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  Home : ITU-T : Publications : Recommendations : U Series : U.4 : U.4 (11/88)
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U.4 : Exchange of information regarding signals destined to be used over international circuits concerned with switched teleprinter networks

Recommendation U.4 (11/88)

Approved in 1988-11

Status : In force


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PDF Document PDF (acrobat)

48140 bytes 1990-04-19 E 15365 
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PDF Document PDF (acrobat)

54271 bytes 1990-04-19 S 15365 
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PDF Document PDF (acrobat)

54438 bytes 1990-04-19 F 15365 

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Word Document Word

32093 bytes 1990-04-19 E 15365  Download Download
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Updated : 2001/09/10