CodeRED delivers the notification through a high-speed telephone calling system to a phone number on the CodeRED database. County staff will access CodeRED via a secure portal on the web. A "call area" will be marked identifying street addresses. Telephone numbers will be matched up electronically to these addresses through the use of Geographical Information Systems (GIS). A voice and/or text message will be sent out via the telephone with information about the incident and possibly instructions for action to be taken.