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  Home : ITU-T : Publications : Recommendations : H Series : H.21 : H.21 (10/84)
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H.21 : Composition and terminology of international voice-frequency telegraph systems

Recommendation H.21 (10/84)

Approved in 1984-10-19

Status : Withdrawn

Deleted on 1998-06-18 after its content became technically out of date

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English

PDF Document PDF (acrobat)

148892 bytes 2001-05-28 E 10251 
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PDF Document PDF (acrobat)

150876 bytes 2001-05-28 S 10253 
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PDF Document PDF (acrobat)

155505 bytes 2001-05-28 F 10252 

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Word Document Word

74752 bytes 2001-05-28 E 10251  Download
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Word Document Word

392192 bytes 2001-05-28 S 10253  Download
Français

Word Document Word

83456 bytes 2001-05-28 F 10252  Download

 

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Updated : 2009/06/05