1. Case Study: The ROI of SIP Trunking Date:Tuesday 2/3, 8:30-10:00am Track: SIP-05 –SIP Trunking Room: B114 / B115

2. Slide 2 Agenda Case Study: ROI of SIP Trunking 8:30am Introduction 8:35am Kool Smiles 8:55am Bandwidth.com 9:15am InGate Systems 9:35am Q&A

3. Slide 3 Who is Kool Smiles PC? Kool Smiles PC is a network of local dental offices with a mission to expand access to high quality dental care to underserved children and young adults -Achieved significant ROI and payback in 12 months with a 40% reduction in recurring telephony costs -Accomplished through an IP-PBX upgrade and a SIP trunking deployment with InGate Systems and Bandwidth.com throughout all offices and the centralized call center What is SIP Trunking? -SIP lines are JUST LIKE T1 lines or POTs lines to the end-user… except better !  They use the VoIP Protocol and are provided by an ITSP instead of a LEC  You don’t have to buy them in chunks of 23 channels anymore  They don’t have the same cost structure or geographic restrictions as legacy telephony

4. Slide 4 Kool Smiles Environment before SIP Kool Smiles in late 2007… -Growing company -Old style TDM PBX from 3COM fully deployed but lacking features of the newer IP PBX systems  No global address book and distribution lists  No fully redundant configurations : 5-9s of reliability  No unified messaging or hot desking  No centralized management -Telecommunications costs escalating and taking on a bigger percentage of the IT OpEx budget  POTs lines at the locations….  T1s and long distance in the call center… -IT Budget constraints and headcount pressure starting in 2008

5. Slide 5 The SIP Solution to Multiple Problems We needed a solution for less headcount, more PBX functionality and less cost ! ? ! Enter SIP Trunking… Just like a phone line, but 40%-60% less ! Upgrade proposal to Executive Management - Evaluate offerings from Phone Equipment vendors - Evaluate offerings from ITSP vendors and ongoing cost savings - Purchase new Enterprise phone system centralized components and phone lines - Create connectivity between the new system and existing NBX platform - Stage each location to be trained and migrated to the new system - Port phone numbers and consolidate/eliminate un-needed circuits Benefits - 40-60% per year voice telecom cost savings (reduced costs and reduced lines) - Reduced downtime - Eliminate scalability concerns (10,000+ users) - Feature rich enterprise phone system – better communications - Lower administrative costs – reduce IT headcount

6. Slide 6 The Partner Search… Categories to rate vendor solutions - Existing customer base with similar deployments and good references - Unified messaging, find me - follow me, teleworker, ease of use - Reliability, high availability, scalability (10,000+ users) - Centralized management, SIP interoperability, standards and security - Re-use of existing equipment, capex requirements, install complexity - Business disruption risk Equipment and ITSP service interoperability and security was a key concern -The SIP Trunk solution required some middleware to accomplish all the signaling and security that we needed -InGate systems fit perfectly because of their partnership with our preferred IP PBX Vendor and preferred SIP trunking provider

7. Slide 7 Kool Smiles Network Diagram

8. Slide 8 High Level Project Plan & 2008 Results

9. Slide 9 Lessons Learned Porting existing phone numbers -Make sure your account is in good standing and completely paid up before issuing any port requests -Notify the losing LEC that the number will be porting and authorize it -Be extra careful if you are moving numbers from a non-facilities based LEC Check your existing telecom contracts for terms and auto-renewal language Having QoS on your data network will greatly decrease the probability of voice quality problems Having robust bandwidth in between your IP PBX and the SIP trunking ITSP will also decrease the probability of voice quality problems G.729 Codec should be used because of the decreased bandwidth requirements Plan out your E911 capabilities and test calls to the public safety providers to test the ANI/ALI delivery is correct for each location Select equipment and services providers that have a proven track record and can provide good reference accounts and great customer service -5,000,000+ calls since 2/2008 with very few issues

10. Slide 10 Key Partners