What sort of call loads can a PBX handle? I imagine that there is some bottle necking with the system when under load.

  • Can someone clarify?

  • It all depends on what kind of resources the PBX has.
    My Mitel box with a 2.4 GHz processor (no clue on RAM) is able to support at least 300 handsets, probably a lot more than that.

  • Sure, but it would depend on your system in question. Which resource are you lacking? If you don't have enough CPU, then CPU will be your bottleneck. If you don't have enough RAM, then memory will be, etc.

    PBXs handle whatever loads you design them to handle. With enough resources a PBX can handle millions of calls.

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