 By using an automated callout system instead of a manual process in which dispatchers dial workers’ phone numbers and ask for help, utilities reduces the time to fill a callout.Assembling and dispatching crews faster can reduce storm CAIDI (customer average interruption duration index) by up to 30 minutes because crews get to the scene of trouble faster.ARCOS, an acronym for Automated Roster Call Out System, evolved from a company launched by Mitchell McLeod in 1993 called McLeod & Associates, which designed software for Fortune 1000 companies.