AT&T CallVantage

AT&T CallVantage was a voice over Internet Protocol telephone service first offered in 2004 by AT&T Corp., upon the heels of its announcement that it would stop seeking traditional local and long-distance landline customers. After SBC Communications purchased AT&T Corp. in 2005 and renamed itself AT&T Inc., CallVantage was offered as an option with AT&T Yahoo! DSL service, formerly known as SBC Yahoo! DSL.

AT&T CallVantage

AT&T CallVantage was a voice over Internet Protocol telephone service first offered in 2004 by AT&T Corp., upon the heels of its announcement that it would stop seeking traditional local and long-distance landline customers. After SBC Communications purchased AT&T Corp. in 2005 and renamed itself AT&T Inc., CallVantage was offered as an option with AT&T Yahoo! DSL service, formerly known as SBC Yahoo! DSL.