Exhibit 7.1 Joint filing agreement The undersigned hereby agree that Amendment No. 3 to Schedule 13D to which this Joint Filing Agreement is attached as Exhibit 7.1 is filed on behalf of each of them. Dated: March 7, 2003 Warren H. Feldman,...Joint Filing Agreement • March 7th, 2003 • Covista Communications Inc • Telephone communications (no radiotelephone)
Contract Type FiledMarch 7th, 2003 Company IndustryThe undersigned hereby agree that Amendment No. 3 to Schedule 13D to which this Joint Filing Agreement is attached as Exhibit 7.1 is filed on behalf of each of them.
Exhibit 7.1 Joint filing agreement The undersigned hereby agree that Amendment No. 2 to Schedule 13D to which this Joint Filing Agreement is attached as Exhibit 7.1 is filed on behalf of each of them. Dated: January 10, 2002 Warren H. Feldman,...Joint Filing Agreement • January 15th, 2002 • Covista Communications Inc • Telephone communications (no radiotelephone)
Contract Type FiledJanuary 15th, 2002 Company IndustryThe undersigned hereby agree that Amendment No. 2 to Schedule 13D to which this Joint Filing Agreement is attached as Exhibit 7.1 is filed on behalf of each of them.