EXHIBIT 1 --------- AGREEMENT OF JOINT FILING ------------------------- Deutsche Telekom AG and France Telecom hereby agree that the Statement on Schedule 13D to which this agreement is attached as an exhibit, as well as all future amendments to such...

                                                                       EXHIBIT 1
                                                                       ---------
 
                           AGREEMENT OF JOINT FILING
                           -------------------------


     Deutsche Telekom AG and France Telecom hereby agree that the Statement on
Schedule 13D to which this agreement is attached as an exhibit, as well as all
future amendments to such Statement, shall be filed jointly on behalf of each of
them. This agreement is intended to satisfy the requirements of Rule 13d-
1(f)(1)(iii) under the Securities Exchange Act of 1934, as amended.



Dated:  February 12, 1996.          DEUTSCHE TELEKOM AG
            


                                    By: /s/ Joachim Kroeske
                                       -------------------------------
                                    Title: Chief Financial Officer


                                    By: /s/ Xxxxxxx Xxxx
                                       -------------------------------
                                    Title: Executive Vice President
                     


                                    FRANCE TELECOM



                                    By: /s/ X. Xxxxxxxxxxx
                                       -------------------------------