The external call transfer – is the call transfer to a telephone line other than the company’s telephone line. The internal call transfer – the transfer of an incoming call to another addressee registered on the same telephone line.
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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