1. Delivering high-quality SIP applications and services Jim Hourihan VP Marketing & Product Management

2. What are we talking about? SIP application & service examples ─ Voice ─ Interactive video – person-person ─ “Pay per view” movies and video (streaming) ─ Interactive gaming “High quality” ─ SLA attributes – high QoS (quality of speech), available, reliable ─ Secure ─ Money making ─ Reachability

3. Reachability – Metcalfe’s law and network value The usefulness, or utility, of a network equals the square of the number of users PSTN Internet Data reach Voice reach $64Z ? LAN High Low High IM 2002 EM 1985 Corp. net SP net

4. Transit Mobile Residential End-to-end IP networks Mobile Business Residential Business

5. The IP network border challenges Transit Mobile Residential Mobile Business Residential Business SLA assurance Settlement SLA assurance Security SLA assurance

6. DiffServe-4 SLA assurance across IP networks Admission control problems - voice, video, data & stuff ─ Skinny, unmanaged access pipes everywhere ─ Fat, unmanaged transit pipes QoS Tower of Babel mediation QoS-based reporting, problem isolation & routing Protocol interworking - SIP-H.323, H.323 versions & configurations MPLS ToS NONE Frame T1 DSL DiffServe-2 VLAN-2 VLAN-3 NONE

7. Internet Security between IP networks Access control – what calls should be allowed in? Topology hiding ─ DoS attacks - SIP proxies, gateways & app servers; IP PBX ─ Transit networks disintermediation Bandwidth and QoS theft protection PSTN Business Transit Residential

8. Settlement between IP networks Babbling business models for IP communications Two historical settlement models ─ PSTN – per-minute, destination-based termination fees ─ Internet – free peering for equivalent traffic volume exchanges, small access ISPs pay fees $/minute* $/access pipe size per month* Free on-net calls* $/ minutes bundle per month* $/home per month* $/employee per month* $/MB * Read fine print $/minute

9. Session border controllers deliver high-quality apps & services New product category enables premium interactive communications across IP network borders Session – real-time, interactive communications using SIP, MGCP, H.323, Megaco/H.248 Border – IP-IP network borders ─ Service provider-customer/subscriber ─ Service provider-service provider Control ─ Security & address preservation ─ SLA assurance ─ Revenue & profit assurance ─ Legal intercept

10. Session border controller applications Security SLA assurance Revenue & profit assurance Law enforcement BusinessResidential Mobile PSTN IP Transit IP PSTN O & T Internet

11. Security ─ Access control & network topology hiding ─ Call rate limiting to protect softswitch ─ Hosted NAT traversal SLA assurance ─ Session admission control - access & aggregated link bandwidth ─ QoS marking – 802.1p, VLAN, ToS, DiffServe, MPLS ─ QoS reporting Revenue & profit assurance ─ H.323-SIP interworking ─ Bandwidth & QoS theft protection ─ Accounting & session timers Legal intercept Hosted IP voice services – T1/frame/DSL PSTN Internet IP O&T or Transit PSTN Termination E1a E2b E1b E2b E3 T1FT1 FT3 SIP SIP or H.323

12. SIP-H.323 interworking for reachability Call routing based upon real-time quality Call admission control - available transit link bandwidth Security - protect softswitch and gateways ─ Access control & network topology hiding B2B SIP UA – H.323GK/GW Reporting ─ Accounting & session timers ─ Observed QoS VoIP SIP-H.323 trunking network peering Cisco H.323 SIP B PSTN Clarent H.323 A

13. Voice ASP services Security ─ Access control - session-based pinhole firewall ─ Data center resource hiding SLA assurance ─ App/media server load balancing ─ Session admission control - access link bandwidth ─ QoS marking Internal data center - 802.1p & q External IP net - ToS, DiffServe, MPLS ─ QoS reporting – internal & external data center Revenue & profit protection ─ Accounting ─ Session timers Legal intercept Data Center SIPRTP IP PSTN

14. Net-Net Extending network reach is critical to increasing value Extending reach introduces new border control challenges ─ SLA assurance ─ Security ─ Settlement Session border controllers give service providers the CONTROL to deliver high quality and make money

15. Delivering peak performance for premium interactive communications across IP network borders Acme Packet Net-Net ™ session border controllers