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Introduction

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1. Set -> var -> ${EXTEN} - all needed values are stored in the dialed number (EXTEN variable), so we create a variable called var and set its value to variable EXTEN. Using the most complete mentioned example, 6141234567P582P5P200, var will store it too
2. Set -> number -> ${SHIFT(var,P)} - the SHIFT function will use P as field separator. We get (and remove) the first item from “var” variable. So, number will be 6141234567 (everything before the first P). Then the “var” variable is equal to 582P5P200 (everything after the first P)
3. Set -> tones -> ${SHIFT(var,P)} - with SHIFT function, using P as separator, we get (and remove) the first item from var variable again. Since var is 582P5P200 at this point, tones will be 582 (everything before the first P) and var will now be equal to 5P200 (everything after the first P)
4. Set -> interdigit -> ${SHIFT(var,P)} - with SHIFT function, using P as separator again, we get (and remove) the first item from var variable. Since var is now 5P200, interdigit will be 5 (everything before the first P) and var will now be equal to 200 (everything after the first P). If interdigit was not specified, the default value will be used
5. Set -> duration -> ${SHIFT(var,P)} - and lastly, with SHIFT function again, using P as separator, we get (and remove) the first item from the string (var). Since var is now JUST 200, SHIFT will return the entire string (200), and assign it to duration. If duration was not specified, the default value will be used
6. Custom application => NoOp : > NoOP(number:${number},tones:${tones},inter:${interdigit},duration:${duration}) - This is just a 'comment' to display the variables values, only visible on callweaver console or logs.
7. SET => DIAL_OPTIONS => U(SendDTMFs^${tones}^${interdigit}^${duration}) :With this line we are enabling “SendDTMFs” dial plan and passing all needed arguments
8. Use the dial the trunk application to send the call out the trunk of your choice.  Note the ${number} in the set portion of the application.  This must be there so that the dialed number will be the "number" variable which is derived from the first portion of the speed dial string (in step 2 shown above).

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