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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�
Espa�ol

PDF Document PDF (acrobat)

93071 bytes 1993-07-02 S�3379�
Fran�ais

PDF Document PDF (acrobat)

92834 bytes 1993-07-02 F�3377�

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TIES users

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Format Size Posted Article Number TIES users
English

Word Document Word

63260 bytes 1993-07-02 E�3378� Download
Espa�ol

Word Document Word

75468 bytes 1993-07-02 S�3379� Download
Fran�ais

Word Document Word

75516 bytes 1993-07-02 F�3377� Download

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Updated :�2003/10/01