1. 1 Is IP Centrex Right for Your Business? Internet Telephony Conference and Expo February 2004, Miami, Florida Frank Petkovich, Director, Product Marketing frank.petkovich@sylantro.com (408) 626-2300

2. 2 What is IP-Centrex? A Fully Hosted, Telecom Provider, Network- based Solution Developed to: –Replace Premise-based PBX and IP-PBX Solutions –Compete with IP-PBX Solutions, with A robust, competitive user feature set And full manageability by enterprise telecom/IT management –Provide high-value, high-margin telephony applications Utilizing Standards-based technologies Integrating web-based, wireline and wireless applications

3. 3 What is IP-Centrex? –Serve Small, Medium and Large Enterprise Businesses –Integrate with either Premise Based or Network based Applications –Utilize a managed broadband network to provide 5-9’s reliability, security and voice quality –Interface with the PSTN through Media Gateways and Trunking Softswitches to deliver ubiquitous service

4. 4 Enterprise Drivers for IP-Centrex Capital is still hard to come by, IP-Centrex offers: –Improve productivity through collaborative & personal features –ROI <90 days Multi-site, migration strategy difficult with IP-PBX –Remote Workers & Teleworkers –Centralized Management, Cost Reduction –More demands of IT/Telecom Groups, fewer people Over 90% of all businesses are in some phase of integrating voice and data networks –Leverage investments in broadband and infrastructure –Voice VPN and Collaborative applications

5. 5 Why Implement IP-Centrex? Low capital expenses Operating expenses 10%-50% lower than PBX, IP PBX Ease of use –High level of customization by IT/Telecom or User –Delegated access for job-function management –Multi-access, multi-feature ability (desktop, phone, mobile) –Features increase productivity and enhance collaboration Business Advantages –Incorporate multiple locations into single plan –Scales up and down without additional investment –Immediate relocation

6. 6 Network Topology Cisco 5300 /36XX Administrative, control, announcement and conference servers IP unified messaging system Gateway Managed IP Network Service Provider Network E800, LNP, etc. PSTN PRI Trunking Softswitch PSX6000 GSX9000 IP IXC IMT PRI PSTN/3 rd party IP Network Access SS7 Trunking Softswitch Other media services IP Phones IP-enabled digital phones IP-enabled analog phones Customer Premise PBX Sylantro Applications Server Legacy voice mail system

7. 7 Sylantro’s Managed Telephony Suite Access Options Mobility Options COMTRAVELLER Desktop Applications in the palm of your hand COMRIO Telecommuters Multi-offices Visiting sites Remote employees Advanced Options Hosted PBX/ IP Centrex C-BUSINESS Call Hold Call Forwarding Call Waiting Redial Bridged Lines Call Transfer Speed Dial Conferencing Sylantro’s Solutions COMOFFICE Full Outlook Integration Access to end user services COMPORTAL Web-based portal Self administration and access to services COMCIERGE Advanced find- me follow-me Single Mailbox Superior management of incoming callers COMMERCHANT Call center Display POP Check-in/out COMCONSOLE Soft-client attendant console Full presence and data directory

8. 8 Customizable, Secure, Fully Manageable Compliments Use of Phones –Use phones without need for PC End-User Portal –Users access and personalize services & add some features Office Manager Portal –Designed for office manager, not IT –OA controls Moves. Adds, Changes Choice of Endpoints for feature and price maximization

9. 9 Integration with Outlook Full Functionality Integrated at Toolbar –Call Logs –Missed, Incoming and Outgoing –Click to Call Directory Access –Fully synchronized with Outlook –Enter name or number to click-to-call…

10. 10 Case Studies: Real-World Implementations Law Firm Advertising Agency Consulting Firm Travel Agency

11. 11 Case Study: Law Firm 75% reduction in operational costs, 15% reduction in cell phone costs, reduced admin time – more time for attorney and client support. $25,000 CapEx avoidance In-house PBX out of capacity. Didn’t support the firm’s organization Applications included Find Me/Follow Me, detailed billing and tracking and web based management

12. 12 Case Study: Advertising Agency 20% increase in client billings. Save over $200 and one week wait per MAC Previous Centrex solution didn’t support distributed environment Applications include Find Me/Follow Me, unified company image for remote employees, integrated Instant Messaging, real time customer/project bill tracking 40% Cost savings to Serve Home Office Employees

13. 13 Case Study: Consulting Firm Over $75,000 capital cost avoidance Significant reduction in monthly usage charges, administrative call handling, rolodex searches reduced 70% $10K per year reduction in costs for MACs Previous Centrex solution dissatisfied clients, staff and partners. Single number with Find Me/Follow Me and single voice mailbox, online directory, ease of billing

14. 14 Case Study: Travel Agency $75K min. CapEx avoidance, reduced operating expenses, $1,000’s saved in MAC charges Current PBX did not support growth in home and remote offices Call center queuing and routing, peak demand support, find me/follow me, web based portal

15. 15 Current Market Comparison Assumptions: 1000 Users 4 Locations 20% Teleworkers 50% All (Premium) Features 3 IP-Phone Price Points 3 Attendant Consoles Unified Messaging Meet-Me Conferencing Unlimited Flat-Rate Minutes Financials: $400k Y1, $100K Y2-Y5 Yr 1 NPV - $576k 5 Yr NPv - $1.67M Per Station Costs: Y1 - $811 Y2-5 - $606 It’s Not too good to be true, it’s REAL!

16. 16 Summary of IP Centrex Today Available in every metro market in the U.S. 20% - 30% savings in direct operating expenses vs. old phone system Hosted applications add productivity savings of 10%-20% depending on job function CapEx savings of 30%+ in Year 1 alone!

17. 17 Sylantro at a Glance Fully funded, backed by top-tier investors –BCE Capital, Mayfield, Accel, Vanguard, Bank of America Experienced management team –Backgrounds in carrier and enterprise communication –Extensive experience in Enterprise Software Founded 1998, Based in Campbell, CA (Silicon Valley) Delivering IP-based software for hosted: –IP-Centrex/Hosted PBX –Voice IP-VPN / PBX Enhancement –Consumer/Residential VoIP Over 20 service providers delivering services today –Direct and wholesale –Deployed in North America, Asia, Europe Fully funded, backed by top-tier investors –BCE Capital, Mayfield, Accel, Vanguard, Bank of America Experienced management team –Backgrounds in carrier and enterprise communication –Extensive experience in Enterprise Software Founded 1998, Based in Campbell, CA (Silicon Valley) Delivering IP-based software for hosted: –IP-Centrex/Hosted PBX –Voice IP-VPN / PBX Enhancement –Consumer/Residential VoIP Over 20 service providers delivering services today –Direct and wholesale –Deployed in North America, Asia, Europe