Press Releases
Intersil RSLIC Selected for New Integral Access Multi-Service Platform

— HC55185 RSLIC Provides VoIP Interface for PurePacket™ System

IRVINE, Calif., — June 1, 2000 — Intersil (NASDAQ: ISIL), a leading developer of silicon technology for integrated communications applications, announced today that its HC55185 ringing subscriber line interface (RSLIC) has been selected by Integral Access, Inc. for use in its PurePacket™ telephony platform. The device will provide the Voice over Internet Protocol (VoIP) interface for the Integral Access solution.

VoIP and Voice over Digital Subscriber Line (VoDSL) are increasingly being employed to reduce telephony service costs by using a single line to connect both voice and data traffic to a carrier’s core network while preserving toll-quality voice. Local and long distance calling, which can use as little as 50 percent of the bandwidth on typical voice lines, can cost a business thousands of dollars each month.

The HC55185 is a high quality, cost-effective RSLIC which transitions the connection from traditional analog lines to digital networks by providing the ringing signal to the terminal equipment without external ringing generators or relays. The voice interface solution uses low power and provides the longest ringing loop range with minimal board space in VoIP, VoDSL and cable modem applications. Intersil’s device combines guaranteed 100V operation with low 80mW standby power and low active power consumption in a non-proprietary single integrated circuit (IC) solution.

"The Intersil HC55185 VoIP-RSLIC is specifically designed to support this developing communications technology as this market segment is expected to grow to almost $2 billion by 2004," said Christopher Ludeman, product marketing manager at Intersil. "We’re pleased that Integral Access chose the Intersil VoIP-RSLIC solution. VoIP products are seeing an infusion of intense innovation, both in the US and internationally, and Intersil is committed to providing world-class solutions in support of this exciting market."

PurePacket from Integral Access is a multi-service packet-based access system that enables competitive carriers to offer differentiated services and combine voice and data on new generation IP-based networks, as well as traditional circuit switched infrastructures. This complete access solution includes customer premise equipment, central office aggregation devices, and an operations management system for network control and services management. To guarantee Quality of Service (QoS), enable Class of Service (CoS), and maximize the traffic carrying capacity of access networks, PurePacket uses a Multiprotocol Label Switching (MPLS) architecture to route, transport and switch voice and data transmissions in packet format. MPLS works with the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame relay network protocols.

"Intersil technology is a key building block for the PurePacket platform," said Guy Chenard, vice president of business development at Integral Access. "The Intersil voice interface solution helps the PurePacket system deliver IP-based voice services that match the quality of calls placed over traditional circuit switched infrastructures."

In comparison to a traditional time-division multiplexing (TDM) system which can only deliver 24 simultaneous voice channels on a T1 leased line, PurePacket can deliver 24 voice calls and 512 Kbit/s of committed data on the same T1 leased line to save significantly on leased line costs.

There are six product offerings of the HC55185 that provide product performance combinations to suit both domestic and international product requirements. The HC55185 is designed to combine high voltage ringing capability with toll-quality voice performance. A member of the Intersil RSLIC18™ family of products, the HC55185 is also used in cable modems, broadband wireless access platforms, residential home gateways and ISDN Terminal Adapters.

About Integral Access
Integral Access, Inc. provides multi-service packet-based access systems that enable competitive carriers to offer differentiated services and combine voice/data on new generation IP-based networks as well as traditional circuit switched infrastructures. The company offers a complete access network solution, which includes customer premise equipment, central office aggregation devices, and an operations management system for network control and services management. Integral Access is based in Chelmsford, Massachusetts and is privately held. To contact Integral Access call +1-978-256-8833, visit us on the Web at http://www.integralaccess.com, or write to info@integralaccess.com.

About Intersil
Intersil uses its semiconductor expertise to enable highly integrated voice, data and video communications. Intersil's integrated communications portfolio includes PRISM^® Wireless Local Area Network (WLAN) chip sets that enable mobile connectivity products for the home and office; analog, mixed-signal and digital integrated circuits for broadband access to wireless and wired Wide Area Networks (WANs); and power management products that enable 24x7 reliability in network servers, next generation PCs and information appliances. For more information about Intersil, visit the company's Internet homepage at www.intersil.com.

PRISM is a registered trademark of Intersil Corporation.
PurePacket is a trademark of Integral Access, Inc.

This press release contains information relating to certain projections and business trends concerning the VoIP and VoDSL market segments that are forward looking statements as defined in the Private Securities Litigation Reform Act of 1995. Such forward looking statements are based upon management’s current expectations, estimates, beliefs, assumptions, and projections about our business and industry. Words such as "anticipates," "expects," "intends," "plans," "believes," "seeks," "estimates," "may," "will" and variations of these words or similar expressions are intended to identify forward looking statements. In addition, any statements that refer to expectations, projections or other characterizations of future events or circumstances, including any underlying assumptions, are forward looking statements. These forward looking statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict. Therefore, our actual results could differ materially and adversely from those expressed in any forward looking statements as a result of various risk factors. Important risk factors that may cause such material differences for Intersil in connection with the VoIP and VoDSL market segments include, but are not limited to, the rate at which our present and future customers and end-users adopt Intersil’s RSLIC technologies and products; the timing, rescheduling or cancellation of significant customer orders; the loss of a key customer; the qualification, availability and pricing of competing products and technologies and the resulting effects on sales and pricing of our products; silicon wafer pricing and the availability of foundry and assembly capacity and raw materials; intellectual property disputes; as well as other risk factors detailed from time to time in Intersil’s filings with the U.S. Securities & Exchange Commission. These forward looking statements are made only as of the date of this press release and Intersil undertakes no obligation to update or revise these forward looking statements.