ITU-T M.820
Periodicity of routine tests on international voice-frequency telegraph links
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| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | active |
| Page Count: | 3 |
Document History
ITU-T M.820
November 1, 1988
Periodicity of routine tests on international voice-frequency telegraph links
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