ErlBTraffic()

To estimate what how much traffic a trunk group of known lines can be offered at a given blocking figure, use:

=ErlBTraffic(x,y)

This function takes two parameters:

•	x is the blocking figure

•	y is the number of lines

For example, to estimate how much traffic a trunk group of 200 lines can carry at 0.300 (3%) blocking, enter

=ErlBTraffic(0.030,200)

The answer should be 190.881

As with other Excel functions, you can either enter absolute values as the parameters, or you can add references to other cell on the same workbook or other open workbooks.