TI's Telogy Software Echo Canceller Passes Comprehensive AT&T Performance Requirements

10/2/2002 - Enabling original equipment manufacturers (OEMs) to provide carriers with networking equipment capable of producing superior voice quality, Texas Instruments announced that AT&Ts Voice Quality Assessment Laboratory has ranked TIs Telogy Software echo canceller as carrier grade. The echo canceller, part of TIs complete Telogy Software Voice over Internet Protocol (VoIP) software and silicon solution, underwent an extensive series of performance evaluations at AT&Ts Middletown, New Jersey lab, resulting in its verification as carrier grade.

"This latest milestone for TI demonstrates its continued commitment to providing customers carrier class VoIP silicon and software solutions," said Norm Bogen, director of communications infrastructure and services, In-Stat/MDR. "For TIs Telogy Software echo canceller to have passed AT&Ts performance requirements is quite an accomplishment. Customers can take this to mean that the voice quality of packet-based networks using the Telogy echo canceller are up to the highest standards in the industry."

TIs Telogy echo canceller underwent a series of rigorous tests including G.168 testing, a speech signal based analog of the G.168 tests that yields Mean Opinion Score (MOS) results, tone disabling testing and a PCM transparency test. For purposes of comparison, the echo canceller was evaluated against the results of two reference echo cancellers that have been widely deployed and are considered "carrier grade."

"Were extremely pleased with the results of these independent tests of our echo canceller," said Bogdan Kosanovic, manager, echo cancellation, TIs VoIP Business Unit. "Our years of development in this area have resulted in balancing performance in a voice over packet environment with an extremely high level of Quality of Service (QOS). Having AT&T conduct these assessments of our echo cancellation technology further assures our customers that they are offering the highest possible level of quality in products designed for carrier networks."

Recognizing the importance of echo cancellation, TI sought and received carrier-class ranking for its Telogy Software echo cancellation solution. Earlier this year, TI acquired Ditechs industry-recognized Telinnovation echo-cancellation software and software team, to further strengthen TIs leadership in echo cancellation technology. This acquisition immediately gave TI a world-class stand-alone echo cancellation solution. Furthermore, by combining the strengths of these two teams, TI can assure its customers the highest quality features for both integrated and stand-alone echo cancellation solutions.

One of the greatest challenges with deploying voice over packet-enabled networking equipment remains quality of voice. End users have come to accept packet voice solutions when the level of quality equals that of the traditional circuit switched network.. While echo cancellation is required in VoIP deployments, successfully executing it is challenging when providing a carrier grade level of quality. However, it is believed that continuously improved voice quality enhancements, including echo cancellation devices, will propel wider and larger scale VoIP deployments throughout the industry.

TIs VoIP solutions integrate field-hardened Telogy Software products with the real-time processing power of TMS320C5000 DSPs. With the most comprehensive range of features to enable customers to quickly develop and deploy their VoIP equipment, TI offers solutions for CPE gateways, carrier-class gateways, voice over DSL, voice over cable and enterprise IP phones. TIs customers include key players in the VoIP market worldwide including Alcatel, Brooktrout Technology, Carrier Access, Cisco Systems, CommWorks, Ericsson, Nortel Networks, Siemens, Sonus Networks and Telica.

About Texas Instruments Broadband Solutions
For OEMs developing broadband communications solutions, TIs advanced signal processing-based silicon and software platforms deliver the optimal performance, lower power consumption, and system-level integration required to rapidly deploy differentiated next-generation products for cable modems, digital subscriber line (xDSL) modems, integrated access devices (IADs), VoIP gateways, carrier infrastructure, and home and office wireless networking.

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