
US Patent No: 5,406,621
Number of patents in Portfolio can not be more than 2000
Telephone tone analysis system
Stats
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Apr 11, 1995
Issued date -
Apr 22, 1994
filing date -
08/231,309
serial no -
In Force
status
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Abstract
In a preferred embodiment, a method of automating configuration of a voice processing system including automating telephone tone parameter determination, including the automated functions of: generating a first telephone line tone; scanning the first telephone line tone for frequency parameters and cadence parameters; arranging the frequency and cadence parameters in a tone definition block structure; and storing the tone definition block structure into memory of the voice processing system for future use in recognizing the first telephone line tone.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,935,958 Busy/no-answer call completion equipment | 49 | 1988 | |
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| 5,070,526 Signal analyzing system | 31 | 1990 | |
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| 4,825,460 Line interface unit for caller-controlled receipt and delivery of voice messages | 48 | 1988 | |
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| 4,926,462 Interface to and operation of a voice messaging system | 121 | 1988 | |