How do I call a contact?
From their card, you can call a contact in one click — on a phone, the number is dialed for you.
Step by step
In Contacts, click the contact: their card appears.
Click Appeler (Call), below their name, or the small handset next to one of their numbers.
On a phone, the call is ready to go: you just press the green button. On a computer, Windows offers the calling app that is installed, if there is one.