JOINT FILING AGREEMENTJoint Filing Agreement • April 13th, 2000 • Madison Dearborn Capital Partners Iii Lp • Radiotelephone communications
Each of the undersigned hereby acknowledges and agrees, in compliance with the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement is attached as an Exhibit, and any amendments thereto, will be filed with the Securities and Exchange Commission jointly on behalf of the undersigned.
PREFERRED STOCK PURCHASE AGREEMENT DATED APRIL 3, 2000Preferred Stock Purchase Agreement • April 13th, 2000 • Madison Dearborn Capital Partners Iii Lp • Radiotelephone communications • New York
Exhibit 4Registration Agreement • April 13th, 2000 • Madison Dearborn Capital Partners Iii Lp • Radiotelephone communications • New York
