NEWPORT BEACH, Calif.-- Conexant Systems Inc. today announced a new technology designed to optimize the quality of digital subscriber line (DSL) connections. Called AutoBaud, the technology, developed in partnership with Lucent Technologies Inc., has also been endorsed by an initial group of carriers and equipment manufacturers as the basis for a hardware-independent SDSL interoperability platform.
AutoBaud technology eliminated time-consuming manual line qualification in setting up symmetric DSL (SDSL) equipment operating at any of the dozens of line rates that SDSL technology supports. AutoBaud will allow carriers to automatically qualify and determine the maximum data rate supported by the line.
The technology is being implemented as an embedded software algorithm within the device driver for Conexant's ZipWire SDSL chip, which Lucent will incorporate into its Stinger DSL access multiplexer (DSLAM). The ZipWire chip enables Lucent's Stinger DSLAM to operate at software-selectable data rates from 144 kilobits per second to 2,320 Kbps, while dynamically allocating voice and data bandwidth as a low-cost T1 alternative.
Lucent has completed a first round of interoperability testing for AutoBaud technology using its Stinger DSLAM. Following completion of interoperability tests, Lucent will endorse Conexant's submission of AutoBaud as the foundation of an industry-wide SDSL interoperability initiative.
The initial group of carriers and manufacturers that support AutoBaud technology includes Covad Communications, NorthPoint Communications, Accelerated Networks, Atlas, CopperCom, Copper Mountain Networks, Efficient Networks, FlowPoint, JetStream, Netopia, Nokia, and Xpeed.
"SDSL is widely used today for the business market," said John Kasha, DSL product manager for InterNetworking Systems at Lucent Technologies in Murray Hill, N.J. "AutoBaud technology takes one of the greatest advantages of SDSL technology -- the ability to support multiple software-selectable data rates -- and makes it significantly easier for carriers to deliver."
Conexant will work closely with Lucent and the other carriers and equipment manufacturers supporting AutoBaud to ensure a high level of compatibility, said Raouf Halim, senior vice president and general manager for Conexant's Network Access Division.
Conexant will make the AutoBaud algorithm available to equipment manufacturers upon request, he said, and will include it in the ZipWire family, Halim said. "We also plan to offer a seamless migration path from these current products to next-generation products that support the forthcoming ITU-based G.shdsl standard," Halim added, "while maintaining backward-compatibility with our current ZipWire products and this first-generation SDSL interoperability platform."