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SBC Selects Scientific-Atlanta to Provide Video Infrastructure for New IPTV Network
[March 31, 2005]

SBC Selects Scientific-Atlanta to Provide Video Infrastructure for New IPTV Network

ATLANTA, March 31 /PRNewswire/ --

- Scientific-Atlanta chosen to support Project Lightspeed based on
extensive video network experience -

Scientific-Atlanta announced today that it has signed a multi-year
agreement with SBC Communications, Inc. to design, build and activate the IP
video super hub offices (SHO), IP video hub offices (VHO) and IP video
operations center (VOC) for its Project Lightspeed network. This advanced
network will be able to deliver video, voice and data services to 18 million
households in the SBC 13-state service area.

In this first-of-its-kind network, the IP video super hub offices will
use Scientific-Atlanta's state-of-the-art video encoders for efficient
advanced video coding (AVC) for standard-definition and high-definition
transmissions, and will be capable of serving the entire SBC footprint.
Additional Scientific-Atlanta advanced video encoders in the IP video hub
offices, located throughout the SBC service area, will provide the essential
encoding functions for locally originated content. At the IP video operations
center, Scientific-Atlanta's ROSA(TM) Element Manager system will be used to
support a broad array of network monitoring and control functions.
Scientific-Atlanta's extensive experience with video networks enables it to
provide SBC companies with comprehensive, proven system integration services
for the SHOs, VHOs, and the VOC.

"The SBC IPTV architecture represents a significant milestone in the
delivery of video to the home over DSL. The state-of-the-art IP video super
hub offices and IP video hubs we are creating will provide SBC companies with
the performance needed to support services on one of the world's most
advanced video processing networks," said Jim McDonald, chairman, president
and CEO at Scientific-Atlanta. "We also look forward to working hand in hand
with Alcatel and Microsoft to assist SBC companies with creating and
launching an IP video system."

About Scientific-Atlanta

Scientific-Atlanta, Inc. (NYSE: SFA) ( )
is a leading supplier of digital content contribution and distribution
systems, transmission networks for broadband access to the home, digital
interactive set-tops and subscriber systems designed for video, high-speed
Internet and voice over IP (VoIP) networks, and worldwide customer service
and support.

"Forward-looking statements," as defined in the Private Securities
Litigation Reform Act of 1995, may be included in this news release. A
variety of factors could cause Scientific-Atlanta's actual results to differ
from the anticipated results expressed in such forward-looking statements.
Investors are referred to Scientific-Atlanta's Cautionary Statements (Exhibit
99.1 to the Company's most recent Form 10-Q), which statements are
incorporated into this news release by reference.

Web site:

Scientific-Atlanta, Inc.

NOTE TO EDITORS: For more information visit . Writers and editors may access a variety of information on the company and its product, as well as downloadable images, by selecting News Center from the home page. Scientific-Atlanta and the Scientific-Atlanta logo are registered trademarks of Scientific-Atlanta, Inc./

CONTACT: Sara Stutzenstein, Public Relations of Scientific-Atlanta, +1-770-236-2181, or fax, +1-770-236-3088, or ; or Larry Meyer, News Media - Project Lightspeed and Video of SBC, +1-210-352-6959, or mobile, +1-210-422-3282, or

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