Rating

In revenue management, rating is the process of costing a call or service. A rating engine takes the data supplied by a mediation engine and applies rates (monetary values) to these. When calls or data services have been rated, these are then sent to a billing engine which aggregates the charges into bills.

A modern rating system must be able to adapt to constantly changing prices, as well as more complex rating scenarios. For competitive reasons, rate plans may change relatively frequently today, and likewise the rate plan may be complex - having been set up, for example, so that once usage has crossed a certain threshold then a lower rate applies. Likewise other credits, discounts, and special rules may apply and need to be taken into account when rating.

Like mediation, as rating increased in complexity a new breed of standalone, specialist rating vendors came to market. Over time, these have largely been acquired by billing vendor.