1. Citel. The VoIP Migration Company™ The Best of Both Worlds: Centrex Handsets in a VoIP Environment Presented to May 6, 2010

2. Presentation Preview Enterprise and Telephony Landscape Citel’s Market Motivations Summary Questions and Answers

3. Today’s Enterprise Operational Landscape Business 2.0, UC (collaboration?) not just buzz terms Enterprises de-centralized, yet focused New applications to serve customers New methods to control costs New accountabilities

4. Today’s Enterprise Telephony Landscape Massive proprietary legacy infrastructure base VoIP benefits real: cost savings, productivity, application integration New choices, more flexibility Migration to VoIP fast, but could be faster

5. Enterprise Telephony Priority List Operational/Total Cost Reduction System Integration/Consolidation Reliability/Availability/Security Scalability Standards

6. Objections for Migrating to VoIP Grooming of the Network 1.Investment of Layer 2/3 Managed Data Switch w/ PoE 2.Investment of having to rewire with Cat 5/6 Data cable 3.Disruption of work flow for the implementation of a converged network

7. Prospect Objections for Migrating to VoIP - continued 4.Investment of new IP based Telephones 5.Disruption of work flow in training employees on new functionality 6.Lack of confidence in the quality of VoIP 7.Anxiety of stepping into the unknown

8. Enterprise VoIP Migration Options Rip & Replace –Expensive, disruptive Proprietary/Single Vendor Path –Limited flexibility, no leverage Do Nothing –Expensive, limited flexibility, no leverage

9. Changing the Dynamics of Migrating from a Legacy TDM/Centrex Based Telephone System to VoIP

10. Category 3 Cable 25 Pair Amphenol PSTN CO Lines Service Provider Current TDM Customer Scenario

11. PSTN & IP Network BroadBand CO/E1/T1 Category 3 Cable 25 Pair Amphenol Router Service Provider Premise Based IP PBX Offering Using Digital Handsets w/Citel Portico™ TVA™ Premise Based IP PBX Telephone VoIP Adapter (Think of it as a Data switch for TDM Phones)

12. IP Network BroadBand Category 3 Cable 25 Pair Amphenol Router Service Provider Hosted IP PBX Offering Using Digital Handsets w/Citel Hosted IP PBX Telephone VoIP Adapter

13. Service Provider Benefits when Using the Portico™ TVA™ 1.Easier to Sell: –Sales Reps & Sales Engineers don’t have to concern themselves with Enterprise LAN Assessments or QoS. –It is easier to migrate a prospect to VoIP rather than fork- lifting them into new technology 2.Less Expensive: –Customers can migrate and receive the benefits of VoIP PBX Services without CAPEX investment in: Layer 2/3 Managed Data Switches w/PoE New Cabling or New IP Phones

14. 3.Faster to Deploy: No data switches to install No cabling to run 4.Easier to Train: Since the customer is keeping their existing handsets there is no end user training involved on the phones Only training is on new IP PBX services 5.Customer can retain 65% of the existing investment in their phone system Sell new IP Phones for new extensions Customers can migrate all phones to IP phones over time rather than fork-lifting all at once. Service Provider Benefits when Using the Portico™ TVA™

15. Citel’s Portico™ TVA™ Solution SIP media adapter designed to convert existing P-Phone, analog and digital proprietary PBX telephone sets into “SIP Endpoints”

16. Citel’s Portico™ TVA™ 2 Versions: 12- and 24-port, stand alone or rack mountable, 1U 19” rack. Digital, P-Phone and Analog versions 100+ Phone Models currently supported, continually growing Line-powers the digital telephones with no local power at the handset needed (handset power issues for P-Phones same whether connected to DMS100 or TVA) Optional FXO Ports to handle E-911

17. Citel’s Portico™ TVA™ Only Portico™ TVA™ integrates disparate equipment from multiple vendors into a single, seamless, enterprise voice network

18. Cabling Requirements Cabling to handsets requires only one pair of wires Cabling is Polarity Sensitive for Meridian 1 phones Cat 3 station cable is recommended, maximum loop length is 1600 ft or 500m Existing PBX/station wiring may be re-used

19. Questions & Answers Thank you for Listening Questions? Ian Gomm 206-957-6270 x3025 Ian.gomm@citel.com