AT&T PURCHASES EQUITY POSITION IN BBN PLANET

NEW YORK, NY, July 12, 1995 -- AT&T and BBN today announced that AT&T
Ventures has purchased an $8 million equity position in BBN Planet, a BBN
subsidiary that provides managed Internet access and value-added services
to business.

The purchase follows by three weeks the announcement of an agreement by
AT&T and BBN to provide businesses with a broad range of services for
reliable, safe access to the Internet. Additional financial details about
the equity purchase were not disclosed.

Alessandro Piol, a partner at AT&T Ventures, a venture capital group
established by AT&T to invest in information technology companies, said
the decision by AT&T to purchase a position in BBN Planet was based on
confidence that the companies' Internet access agreement will successfully
provide customers with a broad and robust array of Internet-based
solutions. "BBN Planet has superior Internetworking skills that complement
AT&T's communications and marketing strengths," he said. "We believe that
this combination of capabilities will create uncommon value in BBN Planet
and we want to participate in building the nation's premier provider of
Internet services."

George H. Conrades, CEO and president of BBN, said the equity purchase
strengthens the relationship between the two companies. "I'm delighted
that AT&T has decided to invest in BBN Planet. It helps to cement our
partnership in its early stages, assuring our joint customers that we have
a long-term commitment to build services that will enable them to conduct
business on the Internet."

AT&T Ventures is the venture capital arm of AT&T, and has offices in East
Hanover, New Jersey and Menlo Park, California. AT&T Ventures invests in
companies that complement and add value to AT&T's strategies. AT&T
Ventures was formed in 1992 and has made 19 investments to date.

Headquartered in Cambridge, Massachusetts, BBN Planet Corporation, a
subsidiary of Bolt Beranek and Newman Inc. (NYSE:BBN), provides managed
Internet access and value-added services to leading companies and
educational, medical and research institutions nationwide. This year BBN
is celebrating the 25th anniversary of its development of the ARPANET,
which led to the modern Internet. For its fiscal year ended June 30, 1994,
BBN had revenues of $196 million.
 
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