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Presents. Chapter 1: Who is O-Tel? Chapter 2: What is VOIP? Chapter 3: How does VOIP work? Chapter 4: VOIP Options Chapter 5: Why VOIP through O-Tel Chapter. - ppt download
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What is VoIP? Voice over IP – how it works & common terminology | Xorcom - IP PBX (Private Branch Exchange) Developer & Manufacturer, Multi-Tenant PBX, Hotel PBX, Virtual PBX, Call Center
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