Transfer Shadow Variables

There is really only one shadow variable that comes up often in most developer code. If you want to be able to log the length of a user's call, (such as for billing purposes), you need only access the lastResult$.duration shadow variable within your application:



      <transfer name="MyCall" dest="tel:+12223334444" 

          bridge="true" connecttimeout="20s" maxtime="60s">



            ...

        <filled>

            ...

          <prompt> 

            The length of the call was <value expr="MyCall$.duration"/> seconds.

          </prompt>

      </filled>

However, if using <transfer> hotwording, (see the next subsection for details), there are a few others that we can grab. The lastResult$.inputmode shadow variable will relay the method, (voice or dtmf), in which the transfer was terminated. The lastResult$.utterance variable will contain the utterance/dtmf key that was entered by the caller to terminate the conference:



 <transfer name="MyCall" dest="tel:+12223334444" 

          bridge="true" connecttimeout="20s" maxtime="60s">



       <grammar type="application/x-gsl">(bye)</grammar>

       <grammar type="application/x-gsl">(dtmf-1)</grammar>



          ...

        <filled>

          <prompt> 

                          The length of the call is <value expr="MyCall$.duration"/>

	    The input modeof the call was <value expr="MyCall$.inputmode"/>

	    The utterance of the call was <value expr="MyCall$.utterance"/>

          </prompt>

        </filled>

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Post-Dialing

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