Exhibit A JOINT FILING AGREEMENT We, Telenor East Invest AS and Telenor AS, the signatories of the amendment to the statement on Schedule 13D to which this Agreement is attached hereby agree that such amendment is filed jointly by Telenor East Invest...

Exhibit A

                            JOINT FILING AGREEMENT

     We, Telenor East Invest AS and Telenor AS, the signatories of the amendment
to the statement on Schedule 13D to which this Agreement is attached hereby
agree that such amendment is filed jointly by Telenor East Invest AS and Telenor
AS. Any subsequent amendments thereto filed by either of us will be filed
jointly on behalf of Telenor East Invest AS and Telenor AS. The undersigned
hereby agree that the joint filing agreement dated November 4, 1999 between
Telenor East Invest AS, Telenor AS and Newtel AB is hereby terminated, and that
such Agreement shall be replaced by this Joint Filing Agreement.

Dated:   March 31, 2000                        TELENOR EAST INVEST AS

                                               By /s/ Xxxxxx Xxxxxxxxx
                                                  --------------------
                                                  Xxxxxx Xxxxxxxxx
                                                  Attorney-in-Fact

                                               TELENOR AS

                                               By /s/ Xxxxxx Xxxxxxxxx
                                                  --------------------
                                                  Xxxxxx Xxxxxxxxx
                                                  Attorney-in-Fact

                                               NEWTEL AB

                                               By /s/ Xxxxx Pay
                                                  --------------------
                                                  Name  Xxxxx Pay
                                                  Title Attorney-in-Fact