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Priority to JP8656583UpriorityCriticalpatent/JPS5976162U/ja
Publication of JPS5976162UpublicationCriticalpatent/JPS5976162U/ja
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Publication of JPS6340936Y2publicationCriticalpatent/JPS6340936Y2/ja
Communication apparatus for detecting a calling signal from a line, for detecting a data communication signal from a calling station, and for generating a quasi-calling tone
Communication apparatus for detecting a calling signal from a line, for detecting a data communication signal from a calling station, and for generating a quasi-calling tone