如何通过Skype拨打电话？

I'm trying to make a button with funcionality of phone calling using Skype (not Skype For Business). I've bought a prepaid which allows me to make phone calls. For Skype-Skype call I'm using command:

<a href="skype:useremail@email.com?call" class="generate-call btn btn-success" >Call</a>

Is it possible to make a Skype phone call with similar way? Or I need different construction?

try this:

<a href="callto://+[the number]">Link will initiate Skype to call my number!</a>

<a href="skype:[the number]?call">Link will initiate Skype
   to call my Skype username!</a>