Telephone Options > Phone Application Options > Setting the Call Timer

This option allows you to have a timer displayed during an active call or for a call on Hold. Displaying the timer is the default, but you can change it by selecting Call Timer from the Phone Options and Preferences screen, then either Yes or No, to indicate whether or not you want the Call Timer displayed for each active or held call. To save your selection, select Save. To exit without making a change, select Cancel.