EXHIBIT A JOINT FILING AGREEMENT

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                                                                 EXHIBIT 99.1

                                    EXHIBIT A
                             JOINT FILING AGREEMENT

         We, the signatories of the statement on Schedule 13D to which this
Agreement is attached, hereby agree that such statement is filed on behalf of
each of us.


Dated: August 4, 1998         X. X. XXXXXXX INVESTMENT, L. P.
                              By: X. X. XXXXXXX ENTERPRISES, INC.
                                 General Partner

                              By:
                                 -------------------------------------------
                                 XXXXXX X. XXXXXXX, President

                              XXXXXXX XXXXXX & COMPANY FINANCIAL
                              SERVICES, INC.

                              By:
                                  ------------------------------------------
                                  XXXXXX X. XXXXXXX, Chief Executive Officer

                              XXXXXXX XXXXXX & COMPANY LEASING, INC.

                              By:
                                  ------------------------------------------
                                  XXXXXX X. XXXXXXX, President

                              XXXXXXX XXXXXX & COMPANY
                              INVESTMENTS, INC.

                              By:
                                 ------------------------------------------
                                 XXXXXX X. XXXXXXX, Chief Executive Officer

                              XXXXXXX XXXXXX & COMPANY

                              By:
                                 -------------------------------------------  
                                 XXXXXX X. XXXXXXX, President

                              ----------------------------------------------
                              XXXXXX X. XXXXXXX

                              X. X. XXXXXXX ENTERPRISES, INC.

                              By:
                                 ------------------------------------------
                                 XXXXXX X. XXXXXXX, President



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                                   TELECOMMUNICATIONS INCOME FUND IX, L.P.
                                   By: XXXXXXX XXXXXX & COMPANY LEASING, INC.
                                       General Partner

                                   By:
                                      ------------------------------------------
                                      XXXXXX X. XXXXXXX, President


                                        
                                   TELECOMMUNICATIONS INCOME FUND  X, L.P.
                                   By: XXXXXXX XXXXXX & COMPANY LEASING, INC.
                                    General Partner

                                   By:
                                      ------------------------------------------
                                      XXXXXX X. XXXXXXX, President

   

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