Integration Topology
VoIP IVR Topology diagram

Exclusively VoIP IVR Solution Topology Diagram
Hybrid PSTN/VoIP Topology diagram

Hybrid VoIP-PSTN IVR Solution Topology Diagram
Digital PSTN Topology diagram

Digital PSTN IVR Solution Topology Diagram
Analog PSTN Topology diagram

Analog PSTN IVR Solution Topology Diagram