How can we contact existing parent using the click to call feature?

How can we contact existing parent using the click to call feature?

To contact the existing parents using the click to call feature, follow the steps given below:

Step 1:
       Select the Voice Calls module and then select the Click to Call under
       the Click to Call menu.
          (Voice Calls ---> Click to Call ---> Click to Call)

Step 2:
         Select the branch, date then click on Get.  On the right side of the
         screen, click on the click to call button.

Step 3:
        Select the relation, class, section, student then click on Dial.

NOTE:
Make sure that the dialer is installed and the dialer should be active
while initiating the call.