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� Home : ITU-T : Publications : Recommendations : Q�Series : Q.31 : Q.31 (11/88)
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Q.31�:�Noise in a national 4-wire automatic exchange �

Recommendation Q.31 (11/88)

Approved in 1988-11-25

Status : In force

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Format Size Posted Article Number
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PDF Document PDF (acrobat)

46910 bytes 1990-05-29 E�15228�
Espa�ol

PDF Document PDF (acrobat)

52387 bytes 1990-05-29 S�15228�
Fran�ais

PDF Document PDF (acrobat)

52562 bytes 1990-05-29 F�15228�

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Format Size Posted Article Number TIES users
English

Word Document Word

31013 bytes 1990-05-29 E�15228� Download
Espa�ol

Word Document Word

41012 bytes 1990-05-29 S�15228� Download
Fran�ais

Word Document Word

39663 bytes 1990-05-29 F�15228� Download

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