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Another Dc Tone Question

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hi,

happy new year...

i have problem with special DC Tone.. this is similar to Dial Tone! that means when call DC , we hear nonstop beep tone like DIAL Tone,

i will attach it at the end

note that i tried to calculate that frequency with audacity software but it didnt work..

please tell me what i do or what frequency is work..?

regards

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When does this tone get played? At which stage of the call do you need to detect this tone?

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hi,

tanx for ur answer,when call DC and remote part dC Call we hear this Tone

please tell me what it i know

regards

test.wav

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When does this tone get played? At which stage of the call do you need to detect this tone?

tanx for ur answer, i need this tone when call is dropped as Busy Tone, when remote part is DC we get this tone.

please Help Me

Regards

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What do you mean by "DC" ? What does "DC" stand for?

hi,

that means when call disconnected, i want to get busy frequency but it doesnt work.

in other words what frequency can i use that call has dissconnected after user hang up.(busy tone has been atached on previous msg)

tanx for u attention.

regards

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the attached test.wav recording has a tone that has two frequencies: 350Hz and 440Hz and goes on for 15 seconds, and afterwards changes to a tone of a single 400Hz frequency.

 

To detect the 350Hz+440Hz continuous tone the DISCONNECT tone definition should be something like this:

 

 

<Tone Name="Call Progress Tone TID_DISCONNECT">

<Notes>Default Setting</Notes>

<ID>TID_DISCONNECT</ID>

<Freq1>350</Freq1>

<Freq1Dev>40</Freq1Dev>

<Freq2>440</Freq2>

<Freq2Dev>40</Freq2Dev>

<On>50</On>

<OnDev>-50</OnDev>

<Off>0</Off>

<OffDev>0</OffDev>

<Count>0</Count>

</Tone>

 

Notice the "-50" in the OnDev field. The negative value there (equal to the On value) tells us this is a continuous tone.

 

Here is the Dialogic Technical Note which shows using negative value when detecting continuous tones: http://www.dialogic.com/support/helpweb/dxall/tn995.aspx

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