VoIPCortex IP PBX solutions - open, scalable, accessible, feature-laden telephony for SMEs and enterprise Home Why VoIP? IP PBX functionality VoIP Checklist What is VoIP? Contact open - scalable - accessible - feature-laden Voice over IP telephony from ipcortex, in partnership with Digital Network Solutions Digital Network Solutions Ltd is an approved IPCortex partner. ©Copyright IP Cortex Ltd 2008.