Here's a basic diagram on how to implement this.
Dedicated Server -> Install Trixbox, Elastix -> Get TollFree number from a voip provider -> Configure Conference bridge on the web based admin tool -> Profit!
Core Incorporated. An Open Source Telephony Consulting Company.
- Call Center Technology Consulting. VoIP wholesale, Hosted and Premise Based VICIDIAL Open Source Predictive Dialer, Open Source Telephony Consulting, Call Center Technology Consulting.
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Pay as you go Voice Blast/Broadcast service! Only pay for the VoIP minutes you consumed.