The web-based ErlangC Calculator
This webpage calculates headcount requirement for a half hour period within your call centre. Remember that the calculation gives the number of agents that should be logged on and ready to take calls. You may wish to schedule more than this number in order to ensure that the required number are logged on.
Webpage and scripting by Phil Stubbs (phil@smart.co.uk)
If you have found this calculator useful, then please let me know.