Instructions
Jump to Make a call to a contact
Make a call to a phone number
1) From the main Skype for Business window, open the Calls tab.
2) Type the number that you wish to call. (You can either click the dial pad buttons with your mouse or you can use your keyboard to type the numbers.) Once the number is entered, click Call.
Make a call to a contact
Under the Contacts tab, click the contact that you wish to call. Then, click the call button (phone icon).
Outcome
You have called the person using TTU Unified Communications.