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  1. 3CX PBX IS INSTABLE

    Please I need a help. I´m using 3CX PBX system in Brazil, working with vono voip provider. I have install 3CX PBX and work properly all functions but is instable to receive calls. I don´t why the reason when someone call me PBX is mute. But if I restart system or shut dow my computer, PBX return...