1. LifeSize Desktop June 15, 2009

2. Page 2 LifeSize Desktop 1.0 Extending the LifeSize experience to your PC LifeSize ® Desktop offers unmatched performance and ease of use, making video communications even more accessible. Enabling more organizations to decrease costs, improve productivity, increase efficiency. Unmatched Price performance  720p30 @ 1Mbps  A fraction of the cost of server based systems  No hidden costs; all features included in price Superior Quality of Experience  720p30 receive, 480p30 transmit  16:9 aspect ratio  Efficient usage of CPU Unique Flexibility  HD at just 1Mbps  Simple deployment ©2009 LifeSize Communications Confidential – For LifeSize Partner Community

3. Page 3 Key Benefits and Features Benefits Extends the LifeSize experience to the PC Easy to use  Familiar LifeSize look and feel from the boardroom to the desktop Simple deployment  No server infrastructure required Highly flexible  Participate over video from the road or your home Standards based video communications Efficient CPU utilization Features  720p30 receive, 480p30 transmit  16:9 aspect ratio  Wideband audio with echo cancellation  Asynchronous transmit and receive ©2009 LifeSize Communications Confidential – For LifeSize Partner Community

4. Page 4 Call Scenarios LifeSize Desktop can be used to call LifeSize endpoints or bridges in the following firewall traversal scenarios Supported  Calling within the office Calling into an endpoint on the same network where there are no firewalls  Calling with VPN connected Connecting through VPN to the corporate network, then calling another endpoint on that same network  Calling to a different network through a LifeSize Transit Server Registering to a LifeSize Transit Server allows the user to seamlessly traverse firewalls and place/receive calls while behind a firewall while at home or travelling ©2009 LifeSize Communications Confidential – For LifeSize Partner Community

5. Page 5 System Requirements  PC only Windows XP SP2 and SP3 Windows Vista 32 & 64-bit SP1  Microsoft.NET Framework 3.5 SP1  Direct X 9 or later  Minimum System Requirements CPU –Pentium 4: minimum 2GHz –Pentium M: minimum 1.8 GHz –Pentium core Duo or Core 2 Duo (any speed) –All other processors 2.0 GHz or higher Memory –1 GB minimum Storage –100MB hard drive space  Supported Endpoints All LS endpoints running software version 4.1 or later ©2009 LifeSize Communications Confidential – For LifeSize Partner Community

6. Page 6 Ordering and Availability LifeSize Desktop software is now available for download from www.lifesize.com as a 30-day trialwww.lifesize.com  The trial version and shipped version are one and the same To permanently unlock the trial software, an activation code must be purchased Activation codes are delivered electronically, via e-mail A single activation code will be able to unlock a set number of seats  1, 5, 10, 25, 50, and 100 seat versions One activation code cannot be sub-divided ©2009 LifeSize Communications Confidential – For LifeSize Partner Community

7. Page 7 Pricing  Starting at US $229 for a single seat activation  Tiered pricing structure. Per seat pricing declines as volume increases ©2009 LifeSize Communications Confidential – For LifeSize Partner Community