Cloud Based Unified Communications and Mobility for Centrex

1. Cloud Based Unified Communications and Mobility for Centrex 2011 ITPX/NCUG Conference Kevin Drury Las Vegas, April 12th, 2010

2. Presentation Overview • Business VoIP and hosted Unified Communications trends suggest accelerating uptake of cost-effective Cloud-based services • Mobile broadband explosion increasing criticality of Wireless Applications • Mobile workforce features driving UC adoption • Meanwhile, IT complexity challenges still exist • Evolution of business communications in the cloud addresses the majority of these challenges while delivering productivity enhancements and reduced costs

3. IP Centrex and Hosted UC Trends • Overall Business VoIP market grew 23% to $15.3B in CY10* • Accelerated uptake in IP Centrex and Hosted UCbased on healthy demand for cloud-based services* • 8% growth in service revenue • 20% growth in seats IP Centrex/Hosted IP PBX Market Size and Forecast $6 $5 $4 Reveune (US$B) $3 $2 $1 $0 CY10 CY11 CY12 CY13 CY14 North America EMEA Asia Pacific CALA *Infonetics: VoIP and UC Services and Subscribers report, 03/28/2011

4. IP Centrex and Hosted UC Trends • Overall Business VoIP market grew 23% to $15.3B in CY10* • Accelerated uptake in IP Centrex and Hosted UCbased on healthy demand for cloud-based services* • 8% growth in service revenue • 20% growth in seats IP Centrex/Hosted IP PBX Market Size and Forecast $6 $5 $4 Reveune (US$B) $3 $2 $1 • 2011 U.S. UC doubled: 8% to 16% • ROI met or exceeded expectations • 3/4said cloud computing enabledfaster UC deployment • 2/3 said cloud computing made it more cost effective to deploy UC $0 CY10 CY11 CY12 CY13 CY14 North America EMEA Asia Pacific CALA *Infonetics: VoIP and UC Services and Subscribers report, 03/28/2011 ** CDW3rd annual UC Tracking Poll, February 2011

5. Mobile Broadband Proliferation • Driven by massive adoption of smart phones and tablets with 3G support at an affordable price IDC, 2010

6. Mobile Broadband Proliferation • Driven by massive adoption of smart phones and tablets with 3G / 4G support at an affordable price • Mobile broadband penetration worldwide rising by a factor of 3.5 by 2014 to reach 27.1% Millions of new user-friendly mobile devices to accelerate availability of OTT VoIP/UC/Video IDC, 2010 Infonetics Research: Fixed and Mobile Subscribers Market Size and Forecast, April 2010

7. Increased Importance of Wireless Applications • 303M Wireless Subscriber Connections in U.S. as of CY10 • 45% of business decision makers state that wireless applications are important or absolutely essential to remaining competitive • Expect 15% improvement in their bottom-line in the next 12 months in terms of increased productivity or cost reduction • Improvements in the form of customer care, communications, employee efficiency and accessibility, stream-lined processes Increasingly mobile workforce National Survey by CTIA-The Wireless Association® and Harris Interactive®

8. Mobile Workforce Features Driving UC AdoptionOn-the-go access features especially valued *Respondents asked to select all of the UC features employees at their organization find (or expect to find) most useful**Respondents asked to select all of the UC benefits that are (or would be) most important to their organizations CDW3rd annual UC Tracking Poll, February 2011

9. Meanwhile, IT Complexity Challenges Still Exist • Employees in multiple locations, geographies and time zones • Maximizing employee collaboration despite travel restrictions Workforce Efficiency • Recovering from a major disaster or maintaining productivity during major weather events Business Continuity • Multiple legacy TDM, VoIP, PBX and mobile network“Islands” with non-homogeneous service capabilities Network Complexity • Reluctance to rip and replace the existing network to attainadvanced business features Migration Strategy • Consolidation and shared services versus decentralization • Outsourcing versus in-house service delivery Network Efficiency

10. Evolution of Business Communications in the CloudAddressing IT Complexity Challenges • IP Networking • Wireless Broadband everywhere • WiFi, 3G and 4G Wireless • Intelligent Devices • IP Phones • PC and Smartphone clients • Directory & Call Logs • Call routing / follow-me • Web services & APIs • Business Apps – complex • “App Store” momentum • Developer communities • Desktop integration • Unified messaging • IM and Presence • Media – text, voice, video • Reservation-less • Multimedia - many variants • Performance enhancing • Ready to scale in volume

11. Overlay Centrex with a Converged DesktopAchieve Productivity Enhancements and Reduced Costs • Preserve Existing Investment • Deploy multimedia services immediately • Retain existing services and phones • Gradually migrate to IP • Users gain access to the full set of UC capabilities, including: • Personal Web Portal • Federated IM, Chat and Presence • Click-to-Call • Adhoc Conferencing • Web Collaboration Fully hosted VoIP Solution Legacy Line withUnified Communications FutureMigrationto Full IP Legacy Line

12. Activate New Clients and PortalsAchieve Productivity Enhancements and Reduced Costs • Voice over IP Client Flexibility • Desktop phones • Soft clients for PC and Mobile Devices • Click to Call and Control of adjacent IP or TDM phone

13. Activate New Clients and PortalsAchieve Productivity Enhancements and Reduced Costs • Voice over IP Client Flexibility • Desktop phones • Soft clients for PC and Mobile Devices • Click to Call and Control of adjacent IP or TDM phone • Call Management • Call Routing – Find me, follow me • Ad-hoc Conference (any time, no reservations) • Multi-call handling • Call Logs

14. Activate New Clients and PortalsAchieve Productivity Enhancements and Reduced Costs • Voice over IP Client Flexibility • Desktop phones • Soft clients for PC and Mobile Devices • Click to Call and Control of adjacent IP or TDM phone • Call Management • Call Routing – Find me, follow me • Ad-hoc Conference (any time, no reservations) • Multi-call handling • Call Logs • Presence/Messaging • Auto Presence including “on the phone” and “Inactive” icon states • Secure IM • IM Federation with Yahoo, AOL, MSN and Google

15. Introduce Mobile OfficeAchieve Productivity Enhancements and Reduced Costs • Extend Corporate network capabilities to the mobile workforce while addressing security risks • Great for employees working in the field or requiring high accessibility • Seek out fixed-mobile convergence offers which support a single number for incoming / outgoing calls with simultaneous / sequential ringing across desk, PC and mobile and a single voicemail box • Look for support of active transfer of calls between mobile and fixed phones with single button push

16. Mobile Office Service Overview • Single identity • One number for incoming / outgoing calls • Simultaneous ringing • IM to SMS federation • Single voicemail box • Calls to mobile and fixed forwarded to single voicemail box • Common dialing plan • Across fixed and mobile devices, including extension dialing • Single point of configuration • All features managed using Web Portal • Consistent call handling • Same features across any device • Mobile Presence • Reflects “on the phone” status of fixed and mobile devices • Call Grabber • Transfer active calls between devices • Dual personality • Personal calls can be billed separately from business calls

17. Mobile Office - Business Feature Support Subscriber Features Group Features • Call Forward Unconditional • Call Forward Busy, Don’t Answer • Call Waiting* • Call Transfer* • Conference* • Call Completion Busy Subscriber • Calling Number Display Blocking • Busy Lamp Field/Presence • Do Not Disturb • Speed Call Long • Call Barring/Restrictions • Call Screening • Call Grabber • Music on Hold • Meet-me conference • Group Call Pickup • Directed Call Pickup • Call Park/Retrieve** • Parallel Team Ringing • Distributed Team Ringing (Hunting) * Call Waiting, Transfer and 3-party Conference are supported with GSM supplementary services on the Mobile Extension Mobile Handset ** Calls cannot be parked on the Mobile Extension Mobile Handset but parked calls can be retrieved

18. Mobile Office Client • Mobile Office is a smartphone / mobile phone / Unified Communications client • Client allows mobile users to seamlessly interact with co-workers using their mobile phone as they would at their desk specifically for: • Mobile Extension Dialing • Access to Network-Based Address Book • Access to Call Logs • Meet-Me Conferencing • Presence/Instant Messaging • Voice Mail • Call Handoff / Call Grabber

19. Realizing Productivity Enhancements & Reduced CostsAddressing IT Complexity Challenges • Productivity enhancements offset the cost of Hosted UC and lower TCO • More effective use of remote/mobile workers with Centrex features extended into the Mobile environment with full interworking with existing fixed Centrex lines • Mobile VoIP services can be extended to smart phones over any 3G, 4G or WiFi network without consuming wireless minutes or incurring LD charges • Reduced travel and faster decision making can be achieved through “ad hoc” & reservation-less audio/video conferencing with no need to book or wait for use of a dedicated facility • Increased employee satisfaction and reduced frustration due to phone and voice mail tag, presence lessens time trying to contact end users Workforce Efficiency

20. Realizing Productivity Enhancements & Reduced CostsAddressing IT Complexity Challenges • Geo-Survivability, alternate routing, survivable gateways, and rapid redeployment • Services delivered to any PC or IP Phone, anywhere there is broadband access, any time, at any desired location. Work from the road, from home, or anywhere due to an emergency or out of convenience Business Continuity • Ease of extending UC across Enterprise network ”islands” • Extend IM externally to Yahoo, AOL, MSN and Google users • Benefits of UC with no replacement of legacy gear Network Complexity • Eliminate upfront Capex, etc. associated with CPE solutions • Simple deployment model for PC or Mobile Client • Smooth Migration through the modernization process Migration Strategy • Support for mixed TDM, VoIP, PBX networks • Limited end user retraining and familiar interface for voice services, IM, Web Collab and audio/video conferencing Network Efficiency

21. Concluding Remarks - Vision of the Future 1 The industry trend towards cloud computing and IT outsourcing will enhance productivity through pervasive communications 2 Productivity enhancements of Unified Communications, Collaboration and true Mobility will change how we work 3 Global applications ecosystems will grow from being consumer centric (Apple, Android, RIM) to deliver rich applications to business verticals

22. Thank You