Intelligent Interconnects in the VoIP Peering Environment John Longo VP Product Marketing & Management, NextPoint

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA About NextPoint Privately held company Result of a merger of NexTone and Reef Point System 350 Employees Headquartered in Gaithersburg, MD with offices around the world Products are deployed in over 35 countries Recipient of over 50 product and industry awards 3

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA Peering Definition & Functional Peering Hierarchy  VoIP peering refers to interconnection between originating and terminating service providers or other organizations for the completion of a seamless session between subscribers on their networks. Media OSI layer 2/3 transport Signaling SIP, H.323 SS7 Registry Function ENUM registry PSTN routing information Commercial or Business Contracts, pricing, legal terms Reports Application or Service VoIP Multimedia Security and Quality Billing, clearing, settlements Messaging Video ENUM cache SCP Presence server

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA Critical Edge Functions in a Peering Environment Function Application Reporting System Provisioning Manager Policy Manager Dynamic Policy Enforcement Policy-Based Session Routing Media Routing Engine Media Processing Signaling Interworking Analytics Engine Security Session Management Session-Based Policy Control Session Routing or Switching Border Control

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA Policy-Based Session Routing Sessions routed based on defined policies or rules that specify how a session is handled given a variety of characteristics such as: –User or community –Business terms or agreements –Quality of service –Service attributes –Technical requirements –Combinations of the above Memory Resident Route Tables Routing Optimizer QOS Policies Business Policies Dial Plans Routing based on A Number B Number Trunk Group Routing ENUM

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA Session-Based Policy Enforcement Policies are enforced on a session-by-session basis to ensure network security, performance, and optimization, based on criteria such as: –Session/call admission control –Route management –Bandwidth control –Enforcement applied on ingress, transit, and egress Outgoing Session/ Call Ingress Transit Egress Multi-stage Policy Enforcement Incoming Session/ Call Memory Resident Route Tables Routing Optimizer QOS Policies Business Policies Dial Plans Routing based on A Number B Number Trunk Group Routing ENUM

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA Dynamic Policy Management™ Enables Intelligent Interconnects 1. Set Policy 2.Enforce Policy 3.Measure, Analyze and Report 4. Optimize Performance IN REAL TIME DPM™ – Dynamic Policy Management NexTone remains in the path of the call for its entire duration and provides a timeline of the service performance Operator defines policies in RSM Business policies Service policies Network policies Policy applied on the users’ sessions –Is the call permitted? –Apply best route? Cost? Quality? Measure and analyze performance –Quality of Experience –Quality of Service –Quality of Network –Business parameters Optimize performance –Update policies –Alert service operator DPM™

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA NextPoint Integrated Border Gateway Policy Decision Functions: NexTone SBC + Mobile Proxy Policy Enforcement Interface Policy Enforcement Functions: Reef Point Mobility Enhanced BGF Dynamic Policy Management 3GPP Compliant Mobile SIP Proxy Core SBC Secure Access and Auth. (IPSec) Virtualized Stateful SIP FW and NAT DoS Protection (SIP/IP) U-flow Traffic Policing, Remarking Virtualized Routing, Mirroring, LI Mobility Functions – PDIF Diameter XML H.248

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA IBG to support Interconnect Evolution Fixed Femtocell/ Picocell Macro Cell Operator Converged Core Broadband/ Internet Macro Cell Interconnect Access VoIP Dual Mode Mobile Broadband 3G VPN Residential SOHO/SMB 2/19/ Broadband/ Internet SGW SBC IBG=SBC+SGW IP IP Smart Pipes SIP End Points VoIP VPN IP Smart Pipes Personal BB + Blended Services IMS Apps Mobile/ Wireless

January 23-25, 2008 Miami Beach Convention Center Miami, Florida USA 11 Thank you….