The Evolution of Internet Telephony

As a founding member of the new Internet Operators Group, AT&T holds a vast amount of experience and expertise in building and operating IP-based networks. We participate in North American Network Operators Group (NANOG), the Internet Engineering Task Force (IETF) and Internet2 in addition to sponsoring the AT&T Center for Internet Research and the AT&T Interoperability Lab. We intend to be the number one global provider of communications services delivered over the Internet by pursuing a worldwide, facilities-based strategy. Recently, AT&T has taken aggressive steps toward realizing this vision. Teleport Communications Group (TCG) brings to AT&T......