Those at the top of the telephone tree also respond to the Hotline, indicating activation of their branch. The person handling the call-out monitors the Hotline messages to determine the number of volunteers, that equipment is being transported as needed, and to ensure that all phone tree branches are activated. This information is relayed back to logistics by the person with pager duties. If a branch of the phone tree isn't activated, the pager handler will contact that branch or make arrangements for contact. Other things that appear on your pager Updates frequently occur after a mission has been initiated.
Examples are changes in incident base or directions, or a call for more volunteers.
A group page may or may not occur for updates. Information changes are indicated by the Hotline number plus -411. If a mission is imminent, but tentative or not yet official, a group page with the Hotline number plus -321 will appear. The Hotline may indicate a time frame within which a mission will possibly be called. Access the Hotline for more information.