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So, for instance, if a user wants to dial the number 6141234567 and then send extension number 582 via DTMF if the call is answered, the speed dial key should be defined as “6141234567P582”. See screenshot below! 

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Speed dial key (Advanced options)

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  • Interdigit time: you may need to specify an interdigit time. For instance, if you intend to reach extension 258 but too much time passes between the first and second digit, you could end up in option 2 in the IVR.  In such a case, you can specify interdigit timeout. To care for this more advanced scenario, the Dialplan custom application can be used with a speed dial that includes a second P character followed by a number. Example, you could have a speed dial like: 6141234567P582P5 

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With the specified speed dial, the system will dial 6141234567, and if answered, tones 582 will be sent using .5 seconds as the inter digit time.  So as you can see, the value you specify after the second P is used as interdigit at 1 tenth of a second; 5 equals .5

  • Tone duration: depending on the system receiving the call, you may need to specify a tone duration. The provided Dialplan sets tone duration to 150 milliseconds, which should typically be enough. However, if you notice that tones are sent but do not seem to be recognized by the remote end, you could try to increase the tone duration.  To do so, just add one more P to the speed dial: 6141234567P582P5P200 
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With the specified speed dial above, the system will dial 6141234567, and if answered, tones 582 will be sent using .5 seconds as inter digit time and and 200ms as the tone duration.

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Once a speed dial is configured as needed and the “SendDTMFs” Dialplan procedure has been imported into the system, all you need to do is create a Dialplan that will match the speed dial string and enable the feature before making the call: 

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Shown entry (XXXXXX.P.)  in the previous picture was created in "users" Dialplan.

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