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PR Newswire - December 08, 1998 09:44
Modem Products Enable Equipment Testing and Trials Today More Powerful DSP-based VDSL Chipset Planned for 1999
DALLAS, Dec. 8 /PRNewswire/ -- Texas Instruments (TI) (NYSE: TXN) today disclosed that it is developing DSP-based technology for modem OEMs to deliver voice, data and multimedia video at the highest possible speed available over existing copper telephone wires. With a downstream speed of up to 52 Mbps, this very high bit-rate digital subscriber line (VDSL) service would eliminate the perception of distance by delivering real-time video and real-life, high quality teleconferencing.
Designed to support both business and consumer users, VDSL is optimized for wire line lengths which are less than 9,000 feet (Carrier Serving Area range). The technology is capable of providing both symmetrical and asymmetrical digital connectivity. The data access rates vary depending on the length of the line, from 26 Mbps symmetrical at 1,000 feet to 2 Mbps symmetrical at 9,000 feet.
TI's VDSL chipsets are based on synchronous discrete multi-tone (SDMT) technology with time division duplexing (TDD) developed by Amati Communications and have already completed successful evaluation by many major telephone companies around the world. In late 1999, TI expects to offer a more advanced DSP-based VDSL chipset that will leverage the advantages of performance and low power offered by TI's industry-leading silicon process technology.
"VDSL services are the next technology advance for delivering high-speed data and video communications together with voice over ordinary copper wiring, especially for business applications requiring symmetrical data rate service," said Terry Riley, TI's marketing manager for VDSL solutions. "TI's roadmap for VDSL products extends our successful strategy for ADSL, which combines the performance and low power of TI's silicon process technology with Amati's proven DMT technology for xDSL services."
Optimal installations of VDSL include the following:
-- Public Network Business Data Services: VDSL offers a cost-effective,
easily deployed alternative for businesses that need higher bandwidth
than that provided by a single T1 circuit, but at a lower cost than T3
circuits, private fiber or multiple, inverse multiplexed T1 lines.
-- Public Full Service Access Networks: Telephone companies worldwide
envision a FSAN that will deliver multiple broadband communication
services over a fiber infrastructure that is extended from the central
office to a neighborhood cabinet, a building, the curb and eventually
to the home. VDSL is the technology of choice for business and
residential subscriber access to a FSAN.
-- Private Campus and Office Building Networks: VSDL provides economical
services for high-speed LAN extension within a building or end-to-end
between buildings in a campus. VDSL can also deliver high-speed
transmission for wireless basestation backhaul applications.
-- Apartment Networks: Apartment complex owners can use a VDSL solution
in-house to offer tenants high-speed Internet access, as well as
digital video services from a single satellite dish and on-premises
video servers.
TI's VDSL Products Enable Testing and Trials Today
TI currently offers the Piccolo module and external modem for VDSL testing and product development by networking OEMs. The Piccolo module can be integrated into the access modem used in an Optical Network Unit (ONU) at the service access point, or in subscriber modem products. The Piccolo module combines a digital interface, DSP, SDMT engine with an analog front end and meets key ETSI and ANSI requirements for VDSL services.
TI's planned VDSL chipset will add multiple interfaces to the current VDSL technology, in a package designed to meet the small space and low power consumption requirements of ONU and subscriber equipment. The chipset will be compatible with the Piccolo module, preserving the development work of OEMs for trials and evaluations.
TI's VDSL chipset will offer several advantages for networking OEMs, including better speed, lower cost and reduced power usage compared to competing solutions. Modems built with the TI chipset will support the maximum loop length defined by the standards for a given data rate, as well as symmetrical and asymmetrical data rates. TI's VDSL technology is resistant to radio frequency interference (RFI) on both ingress and egress. Service provider configurability is assured by flexible modem operation, while the high board density in a small footprint with low power requirements will meet the deployment requirements of outside cabinets. TI's VDSL technology is compatible with ADSL services, other DSL services, and legacy T1/E1 services in the same telephone cable group.
All of these features will be achieved with TI's industry-leading silicon process technology and Amati's patented SDMT-TDD (time division duplex) technology, which provides for much higher performance over longer loops and in the noisier, real world conditions of VDSL networks. Already accepted as a standard for ADSL transmission, TI is actively promoting Amati's DMT technology for standardization as the VDSL design preference through the VDSL Alliance, a consortium of technology and network equipment companies. TI is also a contributing member to the Full-Service Access Network (FSAN) group, an alliance of telephone companies working to define future requirements of public networks.
More information about TI's DSL products is available at ti.com
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