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U.140 : Definitions of essential technical terms relating to telegraph switching and signalling

Recommendation U.140 (11/88)

Approved in 1988-11

Status : In force


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PDF Document PDF (acrobat)

99622 bytes 1990-04-19 E 15354 
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PDF Document PDF (acrobat)

81593 bytes 1990-04-19 S 15354 
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PDF Document PDF (acrobat)

103153 bytes 1990-04-19 F 15354 

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Word Document Word

59223 bytes 1990-04-19 E 15354  Download Download
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Word Document Word

74271 bytes 1990-04-19 S 15354  Download Download
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Word Document Word

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Updated : 2001/09/10