The document discusses revenue assurance services for telecommunications companies. It notes that the Russian telecom market is growing rapidly but revenue leaks can still occur through complex revenue streams. Most telecom executives estimate inefficient control over revenue processes can lead to 5-11% revenue leakage. The document then defines revenue assurance as improving efficiency to ensure all possible revenue is collected. It lists benefits as recovered revenue, minimized risk, and optimized performance. The approach described analyzes the entire revenue stream process beyond traditional areas to both immediately improve the bottom line and implement long-term preventative changes. The goal is to complement existing client functions focused only on usage and billing.