Blue Coat PacketShaper Provides Visibility and Quality of Service for Cost Advantages and Productivity Gains Associated with Video ConferencingSUNNYVALE, Calif., June 1, 2009 – Blue Coat Systems, Inc. (Nasdaq: BCSI), the technology leader in Application Delivery Networking, today announced that, according to a global survey it initiated through a research organization, more than 73 percent of enterprises are putting greater emphasis on using high quality video conferencing in place of travelling. The results are consistent with a 2008 study conducted by Nemertes Research, showing that more than 75 percent of IT executive respondents are currently using or planning to use room video conferencing, and more than 50 percent are using or planning to use desktop video conferencing. At the same time, Blue Coat field personnel have witnessed a number of commonly made mistakes in trying to add high quality video conferencing to existing networks and has developed a list of the top seven.
"IT executives say that existing video conferencing systems are often underutilized because of cost, poor video quality and complexity," said Irwin Lazar, vice president, Nemertes Research. "Now, lower costs, better quality, greater ease of use and the desire to use video to reduce travel expenses are creating a 'perfect storm' to drive increased video conferencing demand."
Video Conferencing Must Be Picture Perfect
Rather than running high quality video conferencing over dedicated lines, most organizations are moving towards using it over their existing WAN links to save costs and provide greater flexibility. Without proper visibility of applications running on the network and the means to establish and maintain quality video conferencing sessions, many businesses will experience issues that will undermine the effective use of video conferencing. The most prevalent quality issues involve:
* Frozen video – where the video has ceased to advance while the audio may or may not continue
* Video out of synchronization – where the video is lagging behind the audio
* Artifacts – where portions of the video image are obscured by dark blocks that are not part of the image
“While high quality video conferencing has the potential to replicate the immediacy of an in-person meeting, it places significant performance demands on a network that must serve multiple functions,” said Bethany Mayer, senior vice president, Worldwide Marketing, Blue Coat Systems. “The quality of the user experience is essential for adoption or continued use, and there is very little forgiveness; it needs to be nearly perfect. This can only be accomplished through a combination of application visibility and active quality of service controls.”
Seven Common Mistakes to Avoid
From assessing flawed video conferencing deployments around the world, Blue Coat has developed a list of the seven most common mistakes that companies make in trying to deploy video conferencing:
1. Assessment - failure to assess the network’s readiness for video conferencing
2. Bandwidth Provisioning - failure to provision adequate bandwidth for each video conferencing session
3. Proactive Monitoring - lack of ability to proactively monitor the quality of each video conferencing session
4. Troubleshooting - lack of ability to troubleshoot a video conferencing session if the quality is impaired
5. Unprotected Session Set-up – lack of bandwidth for set-up transactions causing significant delays in starting a new video conferencing session
6. Limitations of Existing Infrastructure - belief that the existing networking infrastructure readily will be able to establish the proper quality necessary for video conferencing
7. Disrupting Other Applications - improper management of video conferencing resulting in excessive bandwidth use or network contention that prevents other applications from running properly
Numerous high quality video conferencing customer deployments show that products such as Blue Coat® PacketShaper® appliances can ensure quality video conferencing sessions over existing networks while protecting the quality of other applications. In addition, the appliances can monitor the performance of video conferencing sessions to ensure they are providing a consistent experience for users. PacketShaper appliances can adjust network parameters if the quality of a video conferencing session is at risk. The appliances also apply advanced compression technologies to reduce the bandwidth requirements for each session. While voice and video data is already compressed by the video conferencing codecs, PacketShaper appliances have specialized header compression and packet packing technologies that can decrease the traffic associated with voice and video conferencing traffic.
Manage and Optimize All Enterprise Video
In addition to video conferencing, Blue Coat solutions can also manage other uses of enterprise video. Blue Coat® ProxySG® appliances can ease the burden of making on demand video available to branch office users by storing a copy of the video in each location after a first user has requested it. That way, additional users will benefit from a rapid start up time since the video is already stored in the branch office. The WAN also benefits, as the video needs to cross it only one time for each office. Videos can also be “pre-populated” or distributed automatically overnight or at times of the lowest network usage so that it is in each location before a user actually requests it.
ProxySG appliances can also ease the burden of running live video over the WAN through its integrated stream-splitting technology and provide intelligent caching for on demand video used in training. For live video streaming, each branch office receives a single stream of video, and then the branch office-based ProxySG appliance splits it into the number of streams required to serve the users requesting it. In this way, only a single stream of video has to pass the WAN for each branch office rather than a stream for each user. For training videos or advertising that isn’t live, on demand caching and CDN capabilities make it possible to deliver consistent messages and training to your entire company – even recorded video conferences.
The use of video for video conferencing, on demand training or live company events continues to expand as an effective means of communication across a distributed enterprise. Video applications must be managed and monitored to achieve the necessary levels of scale and quality while also ensuring the proper performance for other applications using the WAN.
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