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Press Release -- May 2nd, 2012
Source: Calix Networks

New Calix C7 Pseudowire Aggregation Cards Enable Seamless IP Transformation

High-density C7 PWE line cards enable evolution of T1 aggregation to an all-Ethernet infrastructure

PETALUMA, CA – May 2, 2012 – Calix, Inc. (NYSE:CALX, news, filings) today announced that the Ethernet eXtensible Architecture (EXA) Powered Calix C7 Multiservice Access Platform (MSAP) now has two new line cards for the support of pseudowire (PWE) aggregation. As communications service providers transform their networks from SONET to Ethernet, delivery of profitable services such as T1s require the use of PWE to ensure a seamless migration. With the introduction of the DS1-12 PWE and T1-8 PWE line cards to North America’s most widely deployed MSAP, the service providers utilizing the C7 for high-density aggregation of T1 lines for mobile backhaul and businesses can now leverage the same C7 MSAP to deliver these services using PWE, enabling an operationally and capitally efficient evolution to internet protocol (IP). By utilizing these new additions to the C7 and the Calix Unified Access portfolio, service providers can keep their access services under one management umbrella with the Calix Management System (CMS), and aggregate DS1 PWE services from Calix B-, C-, or E-Series networks or other standards-based PWE devices.

“As we continue to deploy our fiber-to-the-premises Broadband Stimulus network, T1 services remain a crucial component of our build out,” said Ron McCue, chief operating officer of Idaho- and Wyoming-based service provider Silver Star Communications. “We deployed our first C7 in 2006, and by utilizing the transformational power of the Calix C7, complemented by these new pseudowire aggregation cards, we now have the ability to bring these T1s and DS1s into an entirely IP infrastructure. This provides the potential for significant efficiencies in our network, keeps our access network under one management system, and gives us one high-density platform with the carrier-grade features my customers expect.”

Built to support both Ethernet and SONET transport, the Calix C7 MSAP provides the industry’s most efficient platform for true network evolution from legacy to IP services. The C7 also reduces costs and management complexity in today’s networks by:

  • Aggregating T1 PWE flows from Calix ONTs (both the 766GX and 743GE) and standards-based PWE end points
  • Providing integrated bit error rate test (BERT) for circuit acceptance and remote troubleshooting
  • Delivering 1:N protection for carrier-grade reliability
  • Increasing GR303/TR08 processing capacity by a factor of two

“The Calix C7 stands alone as the industry’s only true MSAP – a platform architected to help service providers transform their networks from the world of TDM, ATM, and SONET to pure Ethernet and in doing so, provides the most cost elegant and cost effective way to bridge these worlds,” said Kevin Pope, senior vice president of product development at Calix. “For our customers, this translates into powerful leverage, as they reap the capital and operational benefits of deploying one system and one network as opposed to running multiple networks and deploying boxes on top of boxes. With the launch of our latest software release for the Calix C7, our aggressive innovation on this platform continues, with the new PWE aggregation capabilities complementing a number of recent enhancements that include IPv6 support, VDSL2, and 10 Gigabit Ethernet (GE) transport.”

About Calix

Calix (NYSE: CALX) is a global leader in access innovation. Its Unified Access portfolio of broadband communications access systems and software enables communications service providers worldwide to be the broadband provider of choice to their subscribers. For more information, visit the Calix website at

This press release may contain forward-looking statements that are based upon management’s current expectations and are inherently uncertain. Forward-looking statements are based upon information available to us as of the date of this release, and we assume no obligation to revise or update any such forward-looking statement to reflect any event or circumstance after the date of this release, except as required by law. Actual results and the timing of events could differ materially from current expectations based on risks and uncertainties affecting the Company’s business. The reader is cautioned not to unduly rely on the forward-looking statements contained in this press release. Additional information on potential factors that could affect Calix’s results and other risks and uncertainties are detailed in its report on Form 10-K for the fiscal year ended December 31, 2011, filed with the SEC on February 24, 2012, available at

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