How can I dial my contact's phone number from their ooVoo card?

Right click on the Contact's name, select 'Dial to' and choose the number you would like to dial from the list.

***To dial to your contact while you are in a video call, click on the 'Add to call' button located on the left-upper side of the screen, click on the drop down arrow next to the contact name, select 'Dial to' and then the number.