AT&T launched recently its U-verse Voice service to complement its Quadruple-Play offering: TV, Internet, Voice and Wireless.
U-verse Voice is a high-quality digital voice service. The service is delivered over AT&T managed IP network, which guarantees a secure and reliable service. Among other features, the user can manage calls and services from the U-verse Management Portal, including: Messaging, Call History, online Address Book, Click to Call and location.
See the compelling demo of U-verse Voice, where you can see the richness that IP can bring to telco services.
In this article you can find more details on this truly convergent service, empowered by IP and based on IMS (IP Multimedia Subsystem) standards.