The common name shared by communication protocols, technologies and methods ensuring the transfer of the voice signal via the Internet network or by any other IP-networks. The signal is transferred by the communication channel in the digital form and, as a rule, before transferring compresses in order to remove abundance.
ATTelecom is a leading worldwide wholesale carrier of International VoIP (voice calls over the Internet) traffic termination, CallBack service and Prepaid Calling Cards. We are the carrier of choice to many businesses around the world who seek high qualit
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