AT&T Inc. is a premier communications holding company in the United States and worldwide. Operating globally under the AT&T brand, AT&T is recognized as the leading worldwide provider of IP-based communications services to businesses and the leading U.S.
AT&T Inc. is a premier communications holding company in the United States and worldwide. Operating globally under the AT&T brand, AT&T is recognized as the leading worldwide provider of IP-based communications services to businesses and the leading U.S. provider of wireless, high speed Internet access, local and long distance voice, and directory publishing and advertising services. As part of its
IPCB mission is to facilitate worldwide call termination from any IP telephony device, independent of its manufacturer, protocols and origin. IPCB seamlessly integrates with a heterogeneous infrastructure of its Members within hours after signing Membersh
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