When I do the Erlang B calculation, e.g GOS=1%. If I put the Erlang is around 7000, I found that the number of circuit require is less that Erlang. Can anyone help to explain? Thanks in advance.
7000 erlangs is the offered traffic, not the carried traffic.
This being extremely large compared to the GOS, the devices required will be less than 7000.
The actual carried traffic will be approximately 7000 x (1 – GOS). where GOS = 0.01 (1%)