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Erlang-B formula

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  • #35018 Reply
    Ron L

    Pls tell me how the following is possible:

    Let’s look at P.10 GOS on the Erlang-B table for 144 trunks

    The Erlang-B formula indicates the BHT [ Busy Hour Traffic] is 152.5 Erlangs – 1.059 Erlang’s per trunk !!

    How is it possible to generate greater than 1 Erlang per trunk at any GOS?

    #35019 Reply

    What Erlang B is saying is that you can OFFER the trunk group 152.5 Erlangs. At P.10 blocking, only 90% would be actually carried on the trunks – the other 10% would be blocked. So, the carried traffic would be 137.25.

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