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    / /  Soliciting Material Pursuant to Section 240.14a-11(c) or Section 
         240.14a-12

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

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


                        WORLDCOM EXECUTES CONFIDENTIALITY
                              AGREEMENT WITH MCI

       Jackson, Miss., October 23, 1997 -- WorldCom, Inc.(NASDAQ: WCOM)
   today confirmed that on October 20, 1997 it executed a standard
   confidentiality agreement with MCI Communications Corp. in order to carry 
   out discussions about WorldCom's previously announced merger proposal.

       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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