2. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California SIP Trunking… Why is it so important?

3. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California TDM IP PSTN Enterprise PBX Enterprise Media Gateway IP Telephone Typical IP PBX Components Today: IP PBX Capabilities Deployed INSIDE the Enterprise IP PBX Capabilities Deployed INSIDE the Enterprise Hardware gateways connect traditional voice circuits Hardware gateways connect traditional voice circuits

4. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California TDMIP TDM IP PSTN Enterprise Softswitch Enterprise Media Gateway IP Telephone CLASS Switch PSTN Carrier Media Gateway Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway IP to TDM to IP to TDM … Enterprise Softswitch IP Telephone PSTN Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway TODAY… AN INTERIM SOLUTION… IAD TDM IP TDMIP

5. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California TDMIP TDM IP PSTN Enterprise Softswitch Enterprise Media Gateway IP Telephone CLASS Switch PSTN Carrier Media Gateway Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway IP to TDM to IP to TDM … Enterprise Softswitch Enterprise Edge IP Telephone PSTN Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway TDMIP TODAY… NOW…

6. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California This is Real SIP Trunking. Pure IP voice connectivity = Better Quality Pure IP voice connectivity = Better Quality Flexible number of voice calls = Business Flexibility Flexible number of voice calls = Business Flexibility Less hardware devices to manage = Lower Costs Less hardware devices to manage = Lower Costs Single circuit with multiple services = Better Economics Single circuit with multiple services = Better Economics Enterprise Softswitch Enterprise Edge IP Telephone PSTN Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway TDMIP

7. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Multi-carrier terminations… Call-by-call termination leverages cost benefits of multiple carriers & improves performance Multiple IP termination points across enterprise provide inherent redundant paths Multiple carriers inherently provide greater reach Enterprise Softswitch Enterprise Edge IP Telephone PSTN Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway TDMIP PSTN Carrier Media Gateway PSTN Carrier Media Gateway A B C

8. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Comparison of Service Models Consumer & Business Business LargeMediumSmall Consumer / Residential AT&T, BandTel, Cbeyond, Global Crossing, Starvox, USLEC, XO... Comcast, Vonage, Tomato Vine... Bundled Services (Triple Play) ITSP Examples Business Models Cheap Dial Tone Service Models Service Types Un-Managed Best Efforts Voice Quality, Capacity Controlled Fully Managed Service Level Agreements, performance + fault monitoring, QoS, etc. Market Segments Voice: (Local+LD+Toll Free), Data, Web Hosting Internet Dial Tone Voice over “Managed” IP SIP “Soft” Trunking VoIP Centrex VoIP Gateway Trunking

9. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Comparing Service Types VoIP Centrex Providing managed telephone service to a business over an IP connection. This may be wither a “fully managed” or “un-managed” IP connection. VoIP Gateway Trunking SIP “Soft” Trunking Providing voice and data services to a business over a “converged” network connection. Narrowband Voice Services are broken out separately at the customer premise using a “media gateway”. Providing broadband voice and data services to a business over a “converged” network connection. Voice services are broadband or “all IP” to the telephony device. Full service No expert staff needed Low initial investment Economics of V+D convergence Economics convergence Enhanced Services Lowers CapEx Little to no “control” Restricted Capabilities Narrowband service – limited services Personnel costs CapEx Personnel costs (compared to VoIP centrex) Type DescriptionProCon

10. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Understanding the SIP Trunk Services CarrierLocal / DID Long Dist. Toll Free E911CentrexVoIP GW (IAD) SIP Trunk ITSP 1Yes SIP ITSP 2NoYes No SIPNo ITSP 3NoYes No H.323No ITSP 4Yes SIPH.323No Managed vs. Un-managed (Device Management) On-net vs. Off-net (TDM points/IAD, Carrier hop-off) Quality of Service Capabilities (V quality methods) Service Level Guarantees (Contractual Warrants)

11. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California THERE’S MORE… …that makes SIP Trunking important.

12. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Once you’re IP, More opportunities… The enterprise IP PBX has become a software- based unified communications engine –Easily downloaded, and installed on standard servers –It offers much more than just voice over IP! –How can you leverage IM, Video, Presence and more? Enterprise Softswitch Enterprise Edge IP Telephone PSTN Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway TDMIP

13. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California TDMIP TDM IP PSTN Enterprise Softswitch Enterprise Media Gateway IP Telephone CLASS Switch PSTN Carrier Media Gateway Carrier IP Infrastructure Carrier Softswitch Carrier Media Gateway Enterprise Softswitch Enterprise Media Gateway IP Telephone Islands of Enterprise IP… With older TDM connectivity we have islands of IP This is not a good model for sharing unified communication services among enterprises However, with all-IP connectivity… CLASS Switch TDM Telephone

14. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California Bridging the Islands… IP PSTN Enterprise Softswitch Carrier IP Infrastructure Carrier Softswitch Enterprise WAN Router IP Telephone TDM Telephone Enterprise Softswitch Enterprise WAN Router IP Telephone …we can envision B2B enhances services High Definition Voice High Definition Video Federated / Shared Presence State Information Secured B2B Text Messaging

15. www.itexpo.com October 10-13, 2006 San Diego Convention Center, San Diego California You converged your internal network, SIP Trunking converges your external network.