Telephone systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 15, 1986
Grant Date -
N/A
app pub date -
May 24, 1984
filing date -
Nov 30, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a telephone system having an automatic response function wherein a predetermined answer message is automatically sent to a calling originator when a speaking path to the calling originator is established in response to a call signal originated by calling from the calling originator, there are provided a DTMF signal decoder for decoding a DTMF signal sent from the calling originator as a result of key operation at the calling originator after the speaking path has been established, and a memory for storing operated key data corresponding to the output of the DTMF signal decoder, whereby information regarding the calling originator is obtained when the stored content of the memory is zero.
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