Property: BusySilenceUpperDuration
| Type: |
Long |
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| Properties: |
ReadWrite, available at both design and run time. |
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| Function: |
Set the lupper bound of the duration of silence among ringback signals in milli-second. This property affects the accuracy and reliability of the judgement of the telephone line status while dialing or transfering with voice modem. If you are using a voice board, it does not make any sense. Please set the parameters in the TSP configuration dialog. |
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| Description: |
BusySilenceLowerDuration and BusySilenceUpperDuration define a range of duration of ringback signal on the line.
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| See Also: | Judging Telephony Line Status |
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Sample Code In Visual Basic:
The following code shows how to set corresponding parameters for judging call status before dialing, to get more accurate and more reliable judgment of the telephony line status. You may also set them at design time. The parameters set here is the default values suitable in most cases, in fact they need not be set if you use default values.
Sub cmdDial_Click()
VoiceAngel1.SilenceSwing = 1000
VoiceAngel1.UpFrequency= 550
VoiceAngel1.DownFrequency=350
VoiceAngel1.RingBackSilenceUpperDuration=5200
VoiceAngel1.RingBackSilenceLowerDuration=3500
VoiceAngel1.RingBackSignalUpperDuration=1200
VoiceAngel1.RingBackSignalLowerDuration=850
VoiceAngel1.BusySilenceUpperDuration=800
VoiceAngel1.BusySilenceLowerDuration=200
VoiceAngel1.BusySignalUpperDuration=750
VoiceAngel1.BusySignalLowerDuration=400
VoiceAngel1.Dial "666666"
End sub
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