Telecom services involve a broad range of applications such as enterprise telephony, mobile VoIP, retail VoIP, wholesale VoIP, SMS services, MVNO/MVNE/MNO, etc. Every service has a unique billing experience, with elaborate rating processes as well as charges on service. Telecom Invoices and Balanced Billing Systems are imperative for invoicing. Using convergent billing systems, it provides a unified bill for various services. Billing software sends out invoices without fault which means revenue in no time and happy customers.