The time span duration on which a system is running and accessible, is popularly known as operating time. It depends on an agents till what time he or she is on the process and accepting or making calls to the customers on the behalf of clients. In some BPOs, operating time is also considered as the logged in period as well. Business process outsourcing organizations keep track of the operating time to tally the revenue counts. It also helps to create future strategy planning for the call centers.