<p>Simply click on the trunk group you would like to remove, in order to highlighted it. 
When it is so, click on the <img class="icon" src="http://www.tri-line.com/common/img/documentation/tim_professional/delete_button.png" /> button beneath the <span class="reference">Trunk Groups</span>. You will be
asked to confirm your action.</p>

<img class="screenshot naked" src="http://www.tri-line.com/common/img/documentation/tim_professional/removing_trunk_group.png" alt="Removing a trunk group" />