BI assists corporate managers and decision makers to make relevant, accurate, timely and smart decision in an organization and thus lead to increase in productivity and profitability of an organization. BI combines business processes with IT systems to support decision-making in an organization. In order to succeed in the market, telecommunications companies are not competing solely on price. They have to expand their services based on their knowledge of customers’ needs gained through the use of call detail records (CDR) and customer demographics. The telecommunications’ market is now highly competitive.