Silicon Spice Demonstrates Single-Chip OC-3 -- 2016 channels -- Packet Telephony Reference Design.

Business Editors & High-Tech Writers

Voice On the Net Conference

ATLANTA--(BUSINESS WIRE)--Sept. 12, 2000

Reference Design and CALISTO Available Today; OC-3 Reference Design

Provides Fast Time to Market for CALISTO-Based Next Generation Voice

Gateways

Silicon Spice Inc., which is being acquired by Broadcom Corporation (Nasdaq: BRCM), today demonstrated an OC-3 capable Packet Telephony reference design using CALISTO(TM), a highly integrated chip running 240 channels (see related press release, issued today).

The OC-3 Reference Design is available today and is an integral component of the CALISTO Early Access Program (EAP), enabling customers to rapidly bring next generation Carrier Class Voice Gateways and Remote Access Concentrators to market.

The Silicon Spice OC-3 Packet Telephony Reference Design integrates all the major silicon and software components required for a voice-processing subsystem of a Carrier Class Gateway, Broadband Access Gateway or Remote Access Concentrator. The key components in the reference design include:

-- CALISTO Communication Processor

-- Broadcom xChange(TM) Packet Telephony Software

-- Telephony Interfaces

-- Packet Interfaces

-- Aggregration

"The OC-3 Packet Telephony Reference is a significant milestone in the overall CALISTO Development Program. The true performance of CALISTO is best demonstrated with a fully loaded in targeted application," said Vinod Dham, who will become Vice President and General Manager of Broadcom's newly created Carrier Access Business Unit upon completion of the acquisition, expected within 30 days. "The OC-3 Packet Telephony Reference design will dramatically shorten our customers' time to market. The addition of the field proven Broadcom Packet Telephony software significantly reduces the customer's development effort."

The OC-3 Reference Design provides a complete packet-to-circuit solution. It includes a 366 Mhz micro-processor for signaling support, 128 Mbyte 100Mhz DRAM, 8 Mbytes FLASH, 5 Gbps packet switching fabric, 2 x RS232 ports, 8 x programmable status LED's, 6 position mode switch, 2 x 100BaseFX Ethernet ports for RTP over UDP/IP, four CALISTO daughter cards with four CALISTOs each, and an OC-3 ATM daughter card which supports AAL5 for packet traffic and both AAL1/2 voice traffic, all in a 2U high nineteen inch wide box.

The reference design includes Broadcom's leading xChange Packet Telephony software supporting the full range of voice compression modules including G.711, G.723, G.726, G.727, G.728, G.729ABE, AMR and EFR-GSM, as well as tone detection, ECAN, VAD/CNG, and fax and data modem relay and Universal Port.

"CALISTO is the fifth Instruction Set Architecture (ISA) to which Broadcom has ported xChange VoIP software and the raw performance of the OC-3 Reference Design is staggering," said Ross Mitchell, Vice President of Broadcom's Packet Telephony Division. "The maturity of the C compiler and the software development tools are truly remarkable and enabled our developers to port our C and assembly code within xChange much faster than any other development environment."

The CALISTO EAP is available today and includes all the manufacturing details for the OC-3 Packet Telephony reference design including schematics, Gerber plots, assembly drawing, tooling information, test procedures, software source and assembly files. The EAP also includes CALISTO development tools license and the xChange Software Development License. In addition to the OC-3 Reference Design and EAP, Silicon Spice has a team of systems engineers available to customers to augment their engineering programs.

About Silicon Spice

Silicon Spice is a leading developer of semiconductors and software for converging voice and data networks built on Internet technology. Its silicon-level systems provide a platform that enables networking and telecommunications systems companies to accelerate time-to-market and deliver the highest density multi-service solutions. Silicon Spice has 126 employees and is headquartered in Mountain View, California, with sales offices in Mountain View, Boston and Stockholm.

Silicon Spice and CALISTO are trademarks of Silicon Spice Inc. in the United States and certain other countries. Broadcom(R), the pulse logo and Broadcom xChange are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries.