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Q.29 : Causes of noise and ways of reducing noise in telephone exchanges

Recommendation Q.29 (11/88)

Approved in 1988-11

Status : In force


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English

PDF Document PDF (acrobat)

57792 bytes 1990-05-29 E 15219 
Español

PDF Document PDF (acrobat)

64001 bytes 1990-05-29 S 15219 
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PDF Document PDF (acrobat)

64989 bytes 1990-05-29 F 15219 

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English

Word Document Word

38108 bytes 1990-05-29 E 15219  Download Download
Español

Word Document Word

49235 bytes 1990-05-29 S 15219  Download Download
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Word Document Word

48959 bytes 1990-05-29 F 15219  Download Download

 

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Updated : 2001/09/10