SBC Communications Inc. and AT&T Corp. have put the cap on a $16 billion deal that makes the merged company, AT&T Inc., the nation's largest telecommunications provider. But is one more big deal waiting in the wings? Industry observers have speculated for months that the new San Antonio-based AT&T might buy BellSouth Corp., another of the four remaining regional Bell phone companies. Driving much of the talk is the companies' joint ownership of the Cingular Wireless cellular venture. Download complete article in PDF format.