Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1991-05-20
1994-05-31
Kuntz, Curtis
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379100, 379201, 379210, H04M 1100
Patent
active
053176294
ABSTRACT:
A communication apparatus selectively uses plural telephone sets and a line. The communication apparatus includes a circuit for detecting a calling signal from a line, and a control circuit for allowing a specific telephone set to receive an incoming call and ring among plural telephone sets on receipt of an incoming call.
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Canon Kabushiki Kaisha
Kuntz Curtis
Woo Stella L.
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