Abstract
Voice over Internet
Protocol, a category of hardware and
software that enables people to use the Internet as the transmission medium for
telephone calls by sending voice data in packets using IP rather than by
traditional circuit transmissions of the PSTN. One advantage of VoIP is that
the telephone calls over the Internet do not incur a surcharge beyond what the
user is paying for Internet access, much in the same way that the user doesn't
pay for sending individual e-mails over the Internet.There are many Internet telephony applications available. Some, like Cool Talk and NetMeeting, come bundled with popular Web browsers. Others are stand-alone products. VoIP also is referred to as Internet telephony, IP telephony, or Voice over the Internet (VOI)
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