Mark Feidler, an executive with BellSouth since 1991, will take over as chief operating officer on Jan. 1, the company said Monday.

Fiedler’s appointment was one in a series of management changes BellSouth announced.

Dick Anderson, who was president of customer markets, will become vice chairman for planning and administration.

Isaiah Harris is taking over as the president of BellSouth Advertising & Publishing Group.

Feidler was chief operating officer of Cingular from 2001 then returned to BellSouth as chief staff officer in January of this year.