Wal-Mart Stores: No. 1 on Fortune 500 US list

AT&T to cut around 4,600 jobs

AT&T matches Verizon Wireless by launching an unlimited plan

Vonage Holdings to pay AT&T as part of their legal settlement

AT&T to acquire networking equipment from Cisco

AT&T to exit pay phone business

Edge Wireless Holding acquired by AT&T

AT&T dialup services to cost more

AT&T acquiring online advertising company Ingenio

Analysts: AT&T likely to bid for EchoStar Communications

AT&T sues Vonage for Patent Infringement