Coherent Announces Worldwide Deployment of Bi-Directional Echo
Canceller
Greater-than-expected customer demand for EC Duo
DALLAS--(BUSINESS WIRE)--Sept. 10, 1997--Coherent Communications Systems Corporation (NASDAQ:CCSC -
news) today announced that EC Duo has been widely deployed by key customers on an international basis. Introduced in
March 1997, EC Duo is the industry's first available echo canceller solution specifically designed to eliminate bi-directional
noise and echo across a digital wireless network. Coherent is exhibiting at PCS '97 in Dallas, Texas, Booth 23021.
``Initial sales of EC Duo have already exceeded our early forecasts,'' said Dan McGinnis, chief executive officer at Coherent.
``Since its introduction, EC Duo has delivered outstanding cancellation performance across domestic and international CDMA,
TDMA and GSM networks working in tandem with public-switched wireline networks, and is now fully implemented in a
large international GSM network.''
The growth of digital wireless networks has substantially increased the complexity of echo generated across the
wireline/wireless environment. Voice quality across a wireless network is affected by PSTN-generated echo and acoustic echo
produced by mobile handsets and hands-free devices. Within digital networks, echo cancellation is critical due to the combined
effects of digital delays, acoustic echo and hybrid echo generated between callers. Existing echo cancellation systems suppress
or eliminate echo on only one side of the conversation, and must be used in pairs to process the entire voice path. EC Duo is
the only bi-directional solution that incorporates true echo cancellation and optimizes voice quality at both ends of the call,
resulting in higher customer satisfaction and retention and increased talk time revenues.
Based on Coherent's patented RISC-based signal processing techniques, EC Duo incorporates two EC-6000 Series 2 echo
cancellers in a single-board solution. This two-in-one configuration reduces hardware space on the network and delivers
greater dedicated processing power to eliminate echo and enhance voice quality on both ends of the call.
Coherent's advanced, application-specific voice and data optimization software solutions can also be incorporated into the EC
Duo. Audio Plus eliminates acoustic and network echo generated from the 2/4-wire PSTN conversion point, enhancing call
quality for the mobile user. Enhanced Audio Plus completely cancels acoustic echo generated from mobile handsets and
hands-free devices, optimizing call quality for the wireline user. Coherent's level optimization solution, Sculptured Sound,
further refines audio performance by dynamically adjusting for network level variations as signals are processed through the
network.
Network operators can manage EC Duo from a remote or centralized location by implementing Coherent's Management,
Observation and Response (c/mor) system. Newly installed or existing equipment can be remotely configured with c/mor, and
operators can manage the devices through customized monitoring and tracking features such as alarm notifications, active
speech signal levels and detection of voice/non-voice signals. With c/mor, operators have complete remote control of multiple
echo canceller sites.
EC Duo is available through Coherent's direct sales force.
Headquartered in Ashburn, VA, Coherent Communications Systems Corporation is a worldwide leader in echo control, voice
enhancement and audio conferencing technology. The Company manufactures a full-line of echo canceller systems and
application-specific software designed to address a carriers' unique, individual network requirements. The company's products
are used globally by major wireless and wireline telecommunications companies and network operators, including AT&T
Wireless, Cable & Wireless, Cellular One, Cisco Systems, BT, Deutsche Telekom, Mercury, Nokia, NORTEL, Telia and
Telmex. Additional company information can be found on Coherent's home page: coherent.com .
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Note to Editors:
Audio Plus, Enhanced Audio Plus and c/mor are trademarks, and Sculptured Sound is a registered trademark of Coherent
Communications Systems Corporation. All other trademarks are owned by their respective owners.
Except for the historical information contained herein, this news release contains forward looking statements regarding the
marketability of new products and the gaining of new customers. The risks and uncertainties associated with the continued
acceptance of the new products, competition, market growth and timely availability and pricing of products, as well as other
risks detailed in the Company's SEC reports could cause actual results to differ from those in the forward-looking statements.
Contact:
Diane McClelland,
Coherent Communications Systems Corporation
703/724-7311, dmccleland@coherent.com
or
Jane Bryant,
McQUERTERGROUP
703/714-6950, jane@mcqtr.com |
