Press Releases

For Immediate Release - Santa Clara, California, May 22, 2002

Aurora's Advanced Broadband Solutions Increase Capacity for Bandwidth-Intensive Services

Cable-Tec Expo Demo Shows Fiber Deep, Passive HFC Architecture

Santa Clara, CA. — May 22, 2002 — Aurora Networks, a leading developer of advanced optical transport and distribution systems for broadband networks, will demonstrate its fiber deep, passive hybrid fiber/coax (HFC) architecture at SCTE's Cable-Tec Expo (June 5-7, 2002, Henry B. Gonzales Convention Center, San Antonio, Texas, Booth 8102). Aurora's implementation of its next-generation optical networking equipment is an evolutionary progression of traditional HFC architectures that meet the high bandwidth demands of new, revenue-generating residential and business services. While Aurora's products are ideally suited for fiber deep architectures, where they provide unparalleled speed, reliability and cost savings, they are also backward compatible with existing HFC networks, providing an optimal migration path to future network architectures, including fiber-to-the-home. In addition, Aurora's integrated digital technology enables cable multiple system operators (MSOs) to address the lucrative business-to-business Ethernet services market at very low costs.

Bandwidth-intensive services such as video-on-demand (VOD), high-speed Internet access, circuit-switched telephony, voice-over-IP (VoIP) and interactive television are driving cable operators to increase available bandwidth per home. Aurora's passive HFC architecture drives fiber deeper into the network by reducing the typical HFC node service area into fiber serving areas of 80-200 homes, versus the traditional HFC node service areas of 500 homes. Optical node locations are optimized to eliminate active components, such as all RF amplifiers and most power supplies, dramatically increasing both the bandwidth to and from each subscriber, as well as the reliability of the network. At the same time, the ongoing operating and maintenance expenses of the network are substantially lower than those of a traditional HFC network, but at comparable construction costs.

In addition to improving operating costs, Aurora's passive architecture offers operators additional revenue opportunities by enabling them to offer an integrated Ethernet solution for small office/home offices (SOHOs) and small to medium-sized businesses (SMBs) with very little additional cost.

Aurora products and systems being demonstrated at Cable-Tec Expo include:

Passive HFC Hub

Aurora's Passive HFC Hub simplifies the network configuration, enabling a reduction in size of typical hub components to the extent that an entire hub can be installed in a reasonably sized enclosure, effectively a "hub-in-a-box." Each hub serves 20,000 to 30,000 subscribers in a typical passive HFC, fiber deep architecture, and consists of the following elements, mountable in Aurora's high-density CH3000 platform:

•   Optical switch modules for alternate routing protection
•   Optical amplifiers to boost signals
•   Demultiplexers to separate narrowcast wavelengths for combining with broadcast signals
•   Demultiplexers to fan out Ethernet forward signals
•   Multiplexers to combine return ITU channel signals for transport to the headend
•   Optical splitters and combiners.

The compact size of Aurora's "hub-in-a-box" — only nine to twelve rack units (24'' H X 21'' W X 20'' D) — eliminates the need for costly hub buildings, employing instead a cost-effective pedestal enclosure. This all-optical system moves cable modem termination systems (CMTS), video servers and other data processing equipment to the headend, improving efficiency and making the system easier to install and maintain, with faster service restoration. Power level monitoring is performed by Aurora's Optiplex narrowcast demultiplexer/broadcast combiner. This single-slot module simplifies dense wave division multiplexing (DWDM) installations, improves efficiencies by reducing optical losses, and requires less rack space than alternative equipment.

Nodes

Optimized for high bandwidth capacities in both the forward and return path, Aurora's NC4000 and NC5000 series optical nodes offer substantive advantages for operators.

Both node series are available in configurations for fiber deep, passive HFC applications. For larger node service areas, both can be segmented to meet bandwidth demands, providing a cost-effective method for greatly increasing the available bandwidth per user.

When optimized for fiber deep, passive HFC architectures, the Aurora NC4000 series node, with one of the industry's highest RF output capabilities, enables cost-effective design and deployment of networks by eliminating the need for RF amplifiers. The result is increased reliability, a 70 to 75 per cent reduction in active components and increased return bandwidth.

All Aurora nodes feature Aurora's patent-pending digital daisy chain return capability to reduce capital and operating costs, while increasing capacity, performance and reliability. In addition, Aurora's diverse family of digital transceivers and transponders incorporate 100BaseT Ethernet capability for serving business customers (SOHOs or SMBs) with Fast Ethernet service, providing an additional revenue opportunity for operators.

Ethernet Products

Aurora offers the lowest cost-of-entry for operators looking to provide Fast Ethernet services to commercial customers. The product line consists of:

•   Model NI3000 network interface modules, located in the headend to interface between routers and switches, and manage the Ethernet transport network

•   Model OE1110 Ethernet access devices for business premises to interface with customers' local area networks (LANs)

•   Integrated network transport products, comprised of node transceivers, headend digital receivers, and headend transponders for forward transmission of the Ethernet signals.

With this suite of products, operators can offer Fast Ethernet at 100 megabits per second (Mb/s). The system supports external, value-added services, such as virtual local area network (VLAN) tagging, quality of service (QoS) and differentiated services (DiffServ and IPSec). Aurora's Fast Ethernet solution offers the security found in a SONET network, but with a higher level of performance and better economics. For the cost of a fiber drop, located as far as six miles from a node, a 100BaseT Ethernet customer can be activated, saving time and money.

Optical Switches

Aurora will also be introducing its compact OS3200 series of optical switch modules for the CH3000 platform. These switches are available in a single or dual switch configuration for each single-width, half-depth module. Designed to support telephony traffic over alternate routing architectures, the OS3200 series is guaranteed to have a switching time of less than 10 milliseconds. Additionally, the switches have been designed with a wide dynamic threshold adjustment range to support any combination of both analog and digital transmission applications. The module is self-sensing of fiber restoration for maximum network reliability and efficiency, and is fully controllable both locally and remotely.

Press Conference

Aurora Networks will hold a press conference at SCTE's Cable-Tec Expo on Thursday, June 6, 2002 at 9:00 a.m. Central Time in Room 006B at the San Antonio Convention Center. Announcements regarding new products and future developments will be made and company executives will be available to answer questions.

About Aurora Networks
Founded in November 1999, Aurora Networks designs, develops, and markets advanced optical communications systems for traditional hybrid fiber/coax (HFC) networks and advanced, fiber-deep broadband networks. The company's advanced technology delivers significant increases in bandwidth and functionality while providing substantial cost savings when compared to traditional HFC network technology. Aurora Networks is privately held, with headquarters at 4151 Burton Drive, Santa Clara, California 95054. For more information on Aurora Networks or its products, e-mail info@aurora.com, phone (408) 562-1770 or visit www.aurora.com.

Contact:
John Dahlquist
Vice President, Marketing
Aurora Networks, Inc.
408.562.1770 x133
jdahlquist@aurora.com

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