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  Home : ITU-T : Publications : Recommendations : M Series : M.21 : M.21 (10/92)
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M.21 : Maintenance philosophy for telecommunication services

Recommendation M.21 (10/92)

Approved in 1992-10-05

Status : In force

 

Summary

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Format Size Posted Article Number
English

PDF Document PDF (acrobat)

78839 bytes 1993-07-02 E 3378 
Español

PDF Document PDF (acrobat)

93071 bytes 1993-07-02 S 3379 
Français

PDF Document PDF (acrobat)

92834 bytes 1993-07-02 F 3377 

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TIES users

Available languages and formats :
 
Click on the Item

Click on the selected format
and language to get the document

   
Format Size Posted Article Number TIES users
English

Word Document Word

63260 bytes 1993-07-02 E 3378  Download
Español

Word Document Word

75468 bytes 1993-07-02 S 3379  Download
Français

Word Document Word

75516 bytes 1993-07-02 F 3377  Download

 

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Updated : 2003/10/01