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North American DSL Access Concentrator Port Shipments Plummet in the Third Quarter of 2006

Calix Shipments Rise in Down Market

Redwood City, Calif. – November 15, 2006 – According to a newly published report by Dell’Oro Group, the trusted source for market information about the networking and telecommunications industries, worldwide DSL Access concentrator port shipments decreased 5 percent over the previous calendar quarter after reaching three consecutive quarters of record shipments. While higher demand in China fueled an increase in port shipments to the Asia Pacific region, North America experienced a sharp decline with 35 percent fewer ports shipped than in the previous quarter.

“The downturn in North America is not surprising given record levels of shipments in recent quarters and the concurrent flattening of subscriber additions,” said Tam Dell’Oro, President of Dell’Oro Group. “This has resulted in an excess capacity of ports in North American Service Provider networks. Developing regions including China, India and Eastern Europe will account for a growing portion of the market in the coming years as we expect subscriber addition growth in these areas to outpace those in developed regions,” Dell’Oro added.

The report also indicates that despite the slip in the North American market, Calix saw the greatest increase in port shipments and gained the most shares among all other manufacturers.

About the Report

The Dell’Oro Group Quarterly Access Report provides complete, in-depth coverage of the market with tables covering manufacturers’ revenue, average selling prices, and port/unit shipments for Cable, DSL, and PON equipment. Network infrastructure equipment includes Cable Modem Termination Systems (CMTS), Digital Subscriber Line Access Multiplexers ([DSLAMs] by technology ADSL, G.SHDSL, and VDSL), and PON Optical Line Terminals ([OLTs] by technology BPON, EPON, and GPON). The report also covers Cable and DSL Customer Premises Equipment (CPE) technology and PON Optical Networking Terminals (ONTs). To purchase this report, call Karen Yang +1.650.622.9400 x222 or email Karen@DellOro.com.

About Dell’Oro Group

As the trusted source for market information about the networking and telecommunications industries, Dell’Oro Group provides in-depth, objective research and analysis that enables component manufacturers, equipment vendors, and investment firms to make fact-based, strategic decisions. For more information, contact Dell’Oro Group at +1.650.622.9400 or visit www.DellOro.com.