defined as d t u2212 u03b2 d e where d e is a predefined target queueing delay parameter which is user configurable that can be set to 0 2 seconds for example and u03b2 is a predefined user configurable low watermark factor that can be set to 0 1 seconds for example note the retry after timer parameter has a minimum value of u03b1 u2212 u03b2 d e it should be noted that the various values that are provided above and below are only illustrative and should not be interpreted as a limitation of the present invention namely these values can be selected in accordance with the requirements of a particular implementation note that exponentially weighted moving average ewma or any comparable smoothing algorithm could be used to smooth u03bc t in step 330 the method checks if the total queuing delay d t is below a predefined low threshold if the total queuing delay is below the predefined low threshold the method proceeds to step 360 otherwise the method proceeds to step 340 in one embodiment the predefined low threshold is calculated by multiplying a predefined low watermark factor u03b2 with the predefined target queueing delay parameter d e where u03b2 and d e are user configurable parameters that can be set to 0.