Atlanta law firms may have slowed the flow of mergers and acquisitions deals to New York over the past decade, but hometown corporate icon BellSouth Corp. chose a Gotham firm as its lead adviser for the phone company’s largest-ever deal.

Fried, Frank, Harris, Shriver & Jacobson represents BellSouth on the company’s pending $67 billion acquisition by AT&T Inc. of San Antonio, Texas. It’s the fifth major M&A deal since April 1999 for which New York-based Fried Frank was hired as BellSouth’s lead legal adviser.