While on the Planner you can access the phone numbers for any selected row on the grid by clicking the telephone on the bottom left of the screen. The phone numbers will appear on the line to the right of the phone button. If you leave the phone button depressed phone numbers are automatically displayed for any selected person.
To determine what phone number it is (office, home, etc.), position the mouse over the phone number for a brief explanation.
Note: The phone option is available for all tabs.