Telecom billing systems have kept on evolving since their inception in the early 1990s. In the years gone by, telecom billing was primarily done for simple services like voice and SMS. The plans were simple and the significance of billing software was not that high. But, with the addition of data-based services, the pressure on billing and OSS software telecom systems has reached unfathomable proportions. No longer are customers satisfied with separate bills for different services. The paradigm of prepaid/postpaid billing has shifted completely and a centralized charging architecture has become the staple of successful telecom billing systems.

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