1. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. AT&T Unified Communications Services July 2012

2. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Unified Communications & Collaboration 2 Mobile Client Desktop Client Integrates multiple communication tools with presence, behind a single user interface that is accessible from almost any device from virtually anywhere Presence Mobility Team Collaboration Social Networking Instant Messaging Email UM Real Time Voice, Web, Video Conferencing Voice Calling UC Laptop Client

3. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. What’s Driving Business Demand? The need to … 3 Go Mobile Go Virtual Go Global Go Mobile

4. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Mobile Applications Are liberating the employee and continue to grow in demand 4 PC focused, office user Movement toward non-windows based devices Individual applications with different functionality Mobile-centric devices, integrated with wireline networks: Integrated wireline/wireless solutions, least cost routing Single Number Reach Fixed Mobile Convergence Communication enabled business applications Future StateCurrent State

5. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Customer manages data centre, people and support Applications delivered as a service from the Cloud Future State Going Virtual Cloud Based Communications Delivered “as a Service” Current State End-users Networks IP Phones Soft Phones Legacy /TDM Phones IP PBX Server LAN Switch Legacy PBX Router/Gateway IP/MPLS Network PSTN Peripheral Servers (Voice Mail, Presence, FMC…) Benefits: - Lower risk - Faster & less expensive to get started - Expense rather than capital - Support from provider Chat / IM Audio, Web, Video Conferencing Calendar Telephony Messaging/UM Presence 5 Support

6. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. AT&T Unified Communications Services Two Components AT&T UC Central Cloud-Based Client Application Single user interface Mobile-centric Integrates Presence, IM, voice calling, conferencing, messaging, collaboration Tightly integrated with AT&T UC Voice Supports integration with legacy telephony solutions AT&T UC Voice Cloud-Based IP Telephony Services Core IPT features & functionality, voicemail & unified messaging Tightly integrated with AT&T UC Central client application Sold “as a service” on a per-seat basis 6

7. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Place / Receive Calls Mid-Call Move Single Number Reach AT&T UC Central* A single, easy-to-use command dashboard Consistent UC feature set accessible across fixed & mobile devices A single log on to multiple UC applications Dashboard for visibility & control over range of UC solutions Seamless multi-tasking between tools & devices 7 Quickview Dialer Navigation Bar Manage Contacts Search Organize Initiate Escalation Email > Presence IM > Chat > Web Conference *Service features and availability subject to change, modification or delay Contacts Conference Web, Audio, Video Group Conference View Presence Status Availability Preference

8. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. AT&T UC Voice Easy-to-Use, High-Quality IP Telephony Service from the AT&T cloud AT&T solution which employs Cisco Hosted Collaboration Solution (HCS) as a core component of the service. SIP trunking agnostic Rich voice capabilities IP Phone, Video Phone & Soft Phone support Integration with legacy TDM/IP PBX systems Access a range of UC features Integrated UC Service Desk with7x24x365 support 8

9. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Cloud components can be integrated with existing on- premises and hosted capabilities, benefits include: Preserve existing investments Expand capacity Enhance functionality Provide single point of responsibility for integration Interworking with Outlook, Exchange, SharePoint, Lotus Notes Hybrid Integration Leveraging customers’ existing investments Existing Centrex Site Centrex CO Home/Small Office IP Softphone Existing PBX Site Integrated with Managed UC Service New IP Telephony Site Large Office PBX Voice Gateway FMC UC Voice AT&T Connect Audio/Web/Video Conferencing AT&T Wireless PSTN WAN VPN 9 WAN Mobile Network & FMC UC Central

10. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Example Use Case TDM PBX to Cloud-based IP Voice Solution Business Challenges Customer is continually spending money upgrading older equipment and technology. Employees are “hot-desking” between office locations, changing employee phone connections is expensive. Management of their on-premises CPE is their responsibility. Older TDM PBX infrastructure. Customer is on separate networks: one for voice and one for data. 10 UC Voice PSTN IP Flexible Reach SIP Trunking WAN MPLS New Customer Site (UC) Solution Implement IP-based AT&T UC Voice solution Benefit The IP-based service allows them to perform MACD updates more easily, quickly, and less expensively. Frees up internal resources – older telecomm system support teams redeployed into core business support teams. Provides a roadmap to easily layer on UC Services at a future date.

11. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Why AT&T UC Voice? © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Single Point of Responsibility Planning, implementation, delivery & ongoing support Preserve Existing Investments Tailored solutions enabled through vendor agnostic, hybrid architecture Grow and adapt as you need with “per seat” consumption Flexible Long-standing history and heritage providing voice services, security, reliability Carrier Grade Quality Easy upgrade path to tightly integrated UC Services Integrate with the AT&T UC Central client to expand your UC benefits Mobile Integration Expand your reach with a rich mobile experience; single number reach, single voice mailbox 11

12. © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners. Thank You! 12 © 2012 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or AT&T affiliated companies. All other marks contained herein are the property of their respective owners.