This read-only INTEGER reports the Rate Increase Factor for the ABR call in the forward direction, controlling how much the source's rate increases when a backward RM-cell is received with CI=0 and NI=0, with larger factor values producing faster rate increase and a default of rifOneOver16(12). An administrator uses this to understand how quickly this specific ABR call's throughput will climb back up once congestion clears, which affects how fast an application recovers after a slowdown. For example, an ABR call configured with a larger cwspAbrCallFwdRif value than another ramps its forward rate back up more aggressively once the network signals available capacity via clean backward RM-cells.