Instructions for Completing the Carrier Performance Report - All

180.1 - Instructions for Completing the Carrier Performance Report - All Trunks Busy (ATB) (Rev. 175, Issued: 10-28-10, Effective: 04-01-11, Implementation: 04-04-11) Each month the carrier prepares and submits to CMS Central Office (CO) page 13 of the Carrier Performance Report - ATB. This report contains the monthly data for ATB, for both local and toll free calls, the number of beneficiary calls answered in 120 seconds, and the total number of beneficiary calls received. It reports these statistics electronically by the 15th of the month following the reporting month using the Medicare Contractor Reporting of Operational and Workload Data (CROWD) System at the CMS Data Center (CDC). It enters data on the ATB report screen for each office that has been assigned a separate carrier number.