Centillium Communications Targets VoIP Customer Premises Market with Award-Winning Technology.

CHICAGO & FREMONT, Calif. -- Atlanta Product Family Delivers a Comprehensive Platform to Target Growing Wave of Consumer Voice-over-Internet-Protocol Deployments

Leveraging its award-winning expertise in Voice-over-Internet-Protocol (VoIP), Centillium Communications, Inc. (Nasdaq:CTLM), a leading provider of broadband access solutions, today unveiled Atlanta(TM) 100 -- the first member of its new family of carrier-grade solutions for the rapidly growing VoIP Customer Premises Equipment (CPE) market.

The level of voice-quality and features incorporated into Centillium's Atlanta 100 can enable service providers to increase their revenue opportunities by offering consumers a toll-quality VoIP experience with advanced features such as global phone number portability, virtual phone numbers, iron clad security, superior echo cancellation and a host of other new features not available with traditional phone service.

Designed as a highly integrated System-on-a-Chip (SoC), Atlanta 100 supports up to eight voice channels for toll-quality telephone voice, fax calls and routing functionality over any broadband access network (ADSL, cable, WiMAX, etc.). The full-featured product offers a complete hardware reference design, a comprehensive software package and an impressive list of features that enable Plug & Play functionality for trouble-free installation and service activation. System designs based on the Atlanta 100 can connect directly to a broadband modem or be added as part of a small office-home office (SOHO) network.

VoIP service offerings are accelerating around the world as broadband subscribers start to take advantage of increased bandwidth. In a recently issued broadband subscriber report, industry research firm Dell'Oro Group forecasts that the total number of worldwide broadband (DSL, cable and other forms of access) subscriptions are predicted to eclipse 130 million in 2004. Dell'Oro Group goes on to suggest that subscribers are migrating to VoIP in significant volumes, with voice-enabled customer premises offerings on track to triple in 2004.

"As a leading VoIP technology provider, we have put a great deal of thought and analysis into designing products that address the needs of telecommunication operators and consumers," said Tony Shakib, vice president and general manager of Centillium's Access and Networking Business Units. "Atlanta 100, the first member of our Atlanta family of carrier-grade VoIP solutions, addresses the needs of service providers by enabling them to differentiate their offerings through superior voice-quality and next-generation telephony features, while outlining a roadmap that enables a smooth transition to the fully-integrated VoIP network of the future. In turn, consumers will be able to enjoy the benefits of economical, go-anywhere telephony combined with a wide variety of powerful calling features."

Atlanta 100 Product Information

Centillium's Atlanta 100 offers an integrated RISC processor that performs network management, data routing and other functions. The device also includes a built-in packet accelerator that pushes system performance to wire-speed while supporting multiple VoIP channels in parallel.

Atlanta 100 supports a variety of voice codecs, such as G.711 (PCM), G.729a/b, G.726.32 and G.723.1. The chip includes support for Caller Identification (Caller ID) -- including Japan Caller Identification Protocol (JCLIP), Call Forwarding and Call Waiting. It also supports Generic Voice Activity Detection (VAD) and Comfort Noise Generation (CNG) and includes a Message Waiting Indicator, Tele-Conferencing, Call Hold and Pulse Dialing. All of these features enable a carrier-grade VoIP experience that can provide significant advantages to service providers and customers.

Atlanta 100 also integrates an Internet Protocol Security (IPSec) engine with support for Data Encryption Standard (DES), Triple Data Encryption Standard (3DES) and Advanced Encryption Standard (AES), as well as Secure Hash and Message Digest Algorithms in hardware. Atlanta 100 offers several I/O interfaces, providing versatility for device and network connectivity. An on-chip PCI interface enables system OEMs to add additional value-added options to their VoIP CPE offerings, such as WiFi (802.11a/b/g).

Now available for sampling, Atlanta 100 is offered with a software package that includes a real-time operating system, a complete set of security features, full-featured voice software and an SIP stack. All of these features, integrated in the carrier-grade Atlanta 100 VoIP solution, combine to provide customers with the highest level of integration and time-to-market advantages.

About Centillium's Networking Business Unit

Centillium's Networking Business Unit is leveraging the company's expertise in mixed-signal system-on-chip (SoC) technology and software applications to enable Voice over Internet Protocol (VoIP) products for carrier- and enterprise-class gateways and consumer telephony. Designing VoIP processors for next-generation voice, media and wireless gateways along with carrier-grade VoIP solutions for the rapidly growing CPE market, the business unit's Entropia and Atlanta product families provide system designers with unprecedented flexibility while delivering an unparalleled combination of performance, features and price.

About Centillium Communications

Centillium Communications, Inc. is a leading provider of broadband access solutions with innovative systems-level products for the consumer, enterprise and service provider markets. The Company's high-performance and cost-effective infrastructure and service enabler products give its customers the winning edge in broadband access. Centillium Communications' products include mixed-signal integrated circuits and related hardware and software applications for Digital Subscriber Line (DSL) and Optical Networking equipment deployed in central offices and customer premises and Voice over Internet Protocol (VoIP) products for carrier- and enterprise-class gateways and consumer telephony. The Centillium Communications headquarters is located at 215 Fourier Ave., Fremont, CA 94539. Additional information is available at www.centillium.com.

Forward-Looking Statements

Except for statements of historical fact, this release includes statements that are forward-looking statements within the meaning of U.S. Federal securities laws, including statements relating to Centillium's products targeting the VoIP market, broadband deployment and the market for VoIP products. Actual results may differ materially from those indicated by such forward-looking statements based on a variety of risks and uncertainties, including without limitation the risks and uncertainties relating to rate and breadth of deployment of broadband access and VoIP-based services in general and Centillium's technology solutions in particular; Centillium's ability to continue and expand on its relationships with communications equipment manufacturers; and the successful development and market acceptance of Centillium's new products and technology. Centillium undertakes no obligation to update forward-looking statements for any reason. Information about potential factors that could affect Centillium's financial results is included in Centillium's Annual Report on Form 10-K and in other documents on file with the Securities and Exchange Commission.

Centillium Communications, Atlanta, Entropia and Centillium's logo are trademarks of Centillium Communications, Inc.