He served as CEO of the company from December 1991 until July 2001 , as president from December 1991 through September 1996 and as treasurer from inception through 2002 .
In August 1990 , Jonas founded IDT Corp. and has served as Chairman of the Board since its inception .
Jonas served as CEO of the company from December 1991 until July 2001 , as president from December 1991 through September 1996 and as treasurer from inception through 2002 .
In August 1990 , Jonas founded IDT Corp. and has served as Chairman of the Board since its inception .