| 摘要 |
A facsimile module self-diagnostic system is provided that can detect a failure occurring in the transmission-side demodulation circuit or in the reception-side re-modulation circuit in a facsimile module. A test facsimle signal generation circuit (10) is provided on the transmission side of the facsimile module. A test facsimile signal judgement circuit (25) is provided on the reception side of the facsimile module. In a test facsimile signal judgement zone, the test facsimile signal judgement circuit (25) inspects a test DCS (Digital Command Signal) signal at the first stage and inspects a test TCF (Training Check) signal at the second stage.
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