Community media groups are accusing the telecom giant AT&T of discriminating against local public access channels across the nation, and the deadline for public comment is midnight tonight. The dispute centers around how AT&T delivers public television stations to customers. Instead of putting the stations on individual channels, AT&T has bundled community stations onto a generic channel that can only be navigated through a complex and lengthy process. Public television advocates say AT&T is imposing unfair restrictions that will severely restrict audiences. [includes rush transcript]