In these times of complex business setups, telecom industry is also evolving rapidly. Diameter control system specifies many core telecom functions. A top billing system has a quality charging system at its heart, which is excellent at credit control. A quality OCS allows you to monetize services quickly and stay transparent in your day-to-day billing. As a result, the quality of billing improves and even small telcos are able to compete with major players in the market when they have the right OCS system.