Bedminster, N.J.—AT&T and SBC Communications declined to comment on widespread reports that the two companies are in merger talks. According to media reports, SBC is interested in acquiring AT&T. AT&T, which last year got rid of its residential services business, has been building out its enterprise services business. Last year, the company launched a major rebranding campaign for the enterprise market. AT&T’s stock closed at $19.60 on Thursday, up 6.2% from the previous day.