said by radem:Well, many telephone companies are blocking these now (especially low cost VOIP providers). They basically team up with some rural telco to pump a ton of business their way because they have super high termination fees. The caller's company ends up footing the bill. said by tranceFusion:
As much as these free conference call systems disgust me, my employer uses them constantly. I'd like to switch to Vonage, but calling into these sometimes is going to be a necessity..
As far as I know, vonage doesn't block calls to anywhere. It allows calls to everywhere your landline does.