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                               MCI COMMUNICATIONS CORPORATION
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                (Name of Registrant as Specified In Its Charter)

                                            WORLDCOM, INC.
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    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
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[WORLD COM LOGO]


                                                     NEWS RELEASE


FOR MEDIA:                                           FOR INVESTORS:
Josh Howell, (601) 360-8750                          Gary Brandt, (601) 360-8544
Mark Weeks, 011-44-171-570-5759
Joele Frank, Abernathy/MacGregor, (212) 371-5999
Lucas van Praag, Brunswick Group, 011-44-171-404-5959

FOR IMMEDIATE RELEASE 

                          WORLDCOM RESPONDS TO MCI AND
                      BRITISH TELECOM AGREEMENT PERMITTING
                            DISCUSSIONS WITH WORLDCOM

    Jackson, Miss., October 16, 1997 -- WorldCom, Inc. (NASDAQ: WCOM) 
issued the following statement in response to the MCI (NASDAQ: MCIC) and 
British Telecom agreement permitting discussions with WorldCom:

    "We are delighted to have the opportunity to discuss our offer with MCI 
and British Telecom. We believe a WorldCom-MCI transaction offers compelling 
financial benefits and powerful synergies. By 1999 in a WorldCom-MCI merger, 
cost synergies -- before revenue enhancements -- are conservatively expected 
to be $2.5 billion; over five years, WorldCom-MCI's cost synergies -- before 
revenue enhancements -- are anticipated to total at least $15 billion. 
Together, WorldCom and MCI will have the capital, marketing abilities, and 
state-of-the-art network to compete more effectively, and help fulfill the 
intent of the Telecommunications Act of 1996.

    "We believe that our offer provides superior near-term and long-term 
value for MCI shareholders, bondholders, employees, and customers. We are 
confident that our offer can be completed no later than the first quarter of 
1998."

    WorldCom is a global telecommunications company. Operating in more than 
50 countries, the company is a premier provider of facilities-based and fully 
integrated local, long distance, international and Internet services. 
WorldCom's subsidiary, UUNET Technologies, Inc., is an international provider 
of Internet services with over 1,000 Points of Presence (POPs) throughout the 
United States and in Canada, Europe and the Asia-Pacific region. WorldCom's 
World Wide Web address is http://www.wcom.com. The common and depository 
shares of WorldCom trade on the NASDAQ National Market (US) under the symbols 
WCOM and WCOMP, respectively.


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