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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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                                                                    NEWS RELEASE

FOR MEDIA:                                           FOR INVESTORS:
Josh Howell, (601) 360-8750                          Gary Brandt, (601) 360-8544
Mark Weeks, 011-44-171-570-5700
Joele Frank, Abernathy/MacGregor, (212) 371-5999

FOR IMMEDIATE RELEASE

                    FCC ESTABLISHES TIMETABLE FOR COMMENT ON 
                        WORLDCOM VOTING TRUST APPLICATION

    Jackson, Miss., October 9, 1997 -- WorldCom, Inc. (NASDAQ: WCOM) announced
today that at the request of MCI Communications Corporation (NASDAQ: MCIC) and
British Telecommunications plc (NYSE: BTY), in order to give their boards of
directors more time to consider WorldCom's offer for MCI, the staff of the
Federal Communication Commission ("FCC"), after consultation with WorldCom, MCI
and British Telecom, has extended the timetable for public comment on WorldCom's
application to establish a voting trust.

    The FCC has established a timetable for public comment that will begin
three days after the commencement of the WorldCom offer.  WorldCom's offer will
commence when its registration statement is declared effective by the Securities
and Exchange Commission, which is anticipated to occur within approximately the
next 30 days.  The FCC public notice stated that this action does not represent
and should not be interpreted to imply or suggest any FCC concern, comment or
opinion with respect to any aspect of WorldCom's voting trust application.  The
FCC public notice also stated that the FCC will entertain requests to accelerate
this timetable based upon changed circumstances.

    WorldCom said that the revised FCC timetable will not affect the timing of
the WorldCom offer.  WorldCom remains confident that the voting trust will  be
approved in a timely manner and that the WorldCom offer can be completed no
later than the first quarter of 1998.  A voting trust will permit the WorldCom
offer to be consummated prior to receiving final approvals from the FCC and
state Public Utility Commissions.

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.