Open-Source Telephony Infrastructure

<!--HTML-->TONE (Telephony Open-source Network Evolution) is CERN’s future-proof telephony network. Over the past few years, TONE has evolved from its initial design to a solid reality that accommodates some of CERN’s most critical communication services. TONE’s architecture was designed to: - Use VoIP (Voice over IP) standard protocols. - Avoid vendor lock-in by using open-source components. - Reduce operational costs. - Be built on top on the IT department’s Agile Infrastructure, combining Virtual Machines and redundant physical servers. In this presentation we will review the project’s past and future milestones, main use cases and detailed network architecture.