Reply To: Verification on my Calculation

– Do you have busy hour call rate?
– Erlang B or Poisson?

Otherwise, I’d say 4285/22 days/ mo = 194/ day

say 18% peak at BH = 35 BH Calls

35 * (11/60) min = 6.5 e

Using Erlang B, you need 9 trunks