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� Home : ITU-T : Publications : Recommendations : M�Series : M.820 : M.820 (11/88)
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M.820�:�Periodicity of routine tests on international voice-frequency telegraph links �

Recommendation M.820 (11/88)

Approved in 1988-11-25

Status : In force

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PDF Document PDF (acrobat)

48981 bytes 1990-01-09 E�15062�
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PDF Document PDF (acrobat)

54703 bytes 1990-01-09 S�15062�
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PDF Document PDF (acrobat)

62257 bytes 1990-01-09 F�15062�

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Word Document Word

31272 bytes 1990-01-09 E�15062� Download
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Word Document Word

40969 bytes 1990-01-09 S�15062� Download
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Word Document Word

40970 bytes 1990-01-09 F�15062� Download

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