Voice over IP (VoIP) for Telephony - Sponsored Whitepaper

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Black Box Network Services
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The existence of broadband Internet has enabled the introduction of Voice over IP (VoIP) services, as an alternative to expensive
call handling over the Public Switched Telephone Network (PSTN). VoIP enables subscribers to initiate and receive telephone calls in the same manner as PSTN. However, VoIP doesn’t stop at that; it has evolved into a complete set of telephony capabilities that could surpass today’s traditional telephony. Although VoIP was planned to be the solution to eliminating long-distance call charges, it was subject to qualitative hurdles before becoming reality. System costs and Quality of Service (QoS) have been the challenges for VoIP. This document will describe VoIP, its implementation and the challenges. Black Box’s IP PBX phone systems offer interoperability gateways between PSTN and VoIP networks.
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