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IVR trunking calculations

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  • #12645 Reply
    Pete
    Guest

    How do you size IVR ports and trunking? I assume you would use busy hour call volumes, but do you treat the IVR as a trunk or agent? What traffic formulas are needed to make calculations?

    #12646 Reply
    Cameron Dewe
    Guest

    Treat an IVR like agents, if you can queue calls waiting for an IVR port, otherwise treat like a trunk. Then use Erlang-C or Erlang-B calculators to determine the number of ports. Use the average port holding time of the IVR port and busy hour call volumes and IVR specific service standards for answering performance as inputs into the calculations. The Erlang calculations should give you the number of ports needed.

    #12647 Reply
    Aden
    Guest

    Hi Cameron,

    I read your previous reponse on how to calculate staffing requirements based on the predicted number of calls, duration etc. for each interval which the day is broken up in to. However if this is done as typical for every half an hour, does this take into account overflow calls that would arrive in one interval and would still be handled in the next interval? Is this an issue with using Erlang C or possibly even if Simulation were used by looking at half hour intervals by themselves? What can be done about this to make sure we don’t undersize resources?

Viewing 3 posts - 1 through 3 (of 3 total)
Reply To: IVR trunking calculations
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