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The oft-cited business case for Voice over IP equipment (VoIP) is cost savings,
especially for long distance and international calls. But VoIP is now replacing phone systems for calls made within a single building or between nearby offices. That's because
VoIP call quality has improved to the point where it's difficult for a user to distinguish between packetized voice and a digital circuit. As a result, VoIP can now compete with traditional
PBXs based on management and application benefits, rather than just cost savings.
Voice over ip equipment systems now include all the same features that users expect from traditional phones: call waiting,
call transfer, multiparty conferencing, and so on. VoIP also enables new features, such as dialing from a PC, or checking voice mail
using an e-mail client. The ability to integrate voice and data is creating increasingly business-specific applications and functions.
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