ITDetectTone::put_Frequency method (tapi3if.h)

Article
02/22/2024

The put_Frequency method sets the frequency of the tone for which the TAPI Server should generate a tone event.

Syntax

HRESULT put_Frequency(
  [in] long Index,
  [in] long lFrequency
);

Parameters

[in] Index

Specifies the index of the tone to set.

[in] lFrequency

Specifies the frequency, in hertz, of the tone. For more information, see the following Remarks section.

Return value

This method can return one of these values.

Return code	Description
S_OK	Method succeeded.

Remarks

You can set up to three frequencies that make up the components of a tone. If fewer than three frequencies are required, specify a value of zero for the unused frequencies. A tone with all three frequencies set to zero is interpreted as silence and can be used for silence detection.

Requirements

Requirement	Value
Target Platform	Windows
Header	tapi3if.h
Library	Uuid.lib
DLL	Tapi3.dll

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