Cloud Communications Ecosystem Panel Alan Bugos, Vice President of Technology October 15th, 2013

Vonage use of Cloud-based Communication Enhancing International and Domestic Calling Base Mobile Communication Services International Expansion Solidifying core business through continued penetration of international calling and domestic base Meeting the emerging needs of mobile and other connected device users Two international partnerships announced, roll-out began in 2012 Vonages growth strategy is focused on three strategic initiatives: Enhancing International Calling Base, Mobile Communication Services and International Expansion Vonage uses scalable IP-based cloud communications platforms delivering voice, messaging and video communications worldwide leveraging

Service Provider Perspective: Real-Time Communications in a Cloud-Based Infrastructure Sunny-day scenario or rainy days ahead for Cloud Solutions enabling Real-Time Communications and Services? What is the future of RTC in the cloud, will it work, will it scale, how are carriers doing things differently and why? Many IP carriers and service providers are embracing the benefits of RTC in the cloud, yet working through the many challenges presented in their design, architectures and operations. Key Benefits for Voice and Video over IP Service Providers Reduction of Infrastructure Costs and Operational Savings Costs of IaaS and Cloud resources continues to drop Cost-benefits of Data Center Deployment vs. Cloud Services Rapid Deployment of Services Resources enabled when and where – cost efficiencies Reachability: Globally-deployed Infrastructure Distribution of applications: Wide allocation helps reduce DDoS attacks Cloud virtual machines – hypervisor technology and performance continues to improved making RTC possible

Service Provider Perspective: Real-Time Communications in a Cloud-Based Infrastructure Key Challenges for Voice and Video over IP Service Providers IPv4 address space in public cloud yield Network and Port Address Translation (NAT - PAT) issues vs. private cloud Configuration control over firewalls, NAT, security settings and performance Noisy Neighbors: who are they and what is the behavior of your neighbors in the cloud? Real-time communications architecture, design, and operation in the cloud effects on bandwidth, performance, load distribution, etc. Lack of visibility into the cloud environment that impacts your real-time services Management of VM Resources Design and tune VMs for real-time services, RTP, RTCP, VoIP, Video, streaming Impact on trans-coding capability (as needed) Use of real-time environment security – TLS, SRTP, Encryption Design of SBCs as applicable to the service Judicious use of VMs may impact efficiency, availability, cost and performance Monitoring your resources in real-time (In-band vs. out-of-band capabilities)

Service Provider Perspective: Real-Time Communications in a Cloud-Based Infrastructure Key Challenges for Voice and Video over IP Service Providers (continued) Predictability of Service with or w/o SLAs ( % uptime/availability) Operational costs may impact real-time service requirements Security and Data Privacy in the cloud Cloud Environment Governance: Policy, Legal and Regulatory Lawful Intercept real-time Design and Operation Parting Thoughts: Service Provider Real-time Communications in the Cloud Use of IPv6 Address Space will help Cost of VM and infrastructure will decrease Cloud technologies, VMs are significantly improving in performance Improvements in cloud architectures, bandwidth allocation/optimization for RTC continue

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