This paper discusses the principles behind VoIP (Voice-over-Internet-Protocol), its applications and the potential of this emerging technology.
Written in 2005; 7,235 words; 24 sources; MLA; $ 161.95
Paper Summary:
This paper explains that VoIP (Voice over Internet Protocol), also referred to as internet telephony, IP telephony or Voice over the Internet (VOI), is 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. This paper points out that the number of VoIP providers, such as Vonage, is growing steadily; major carriers like AT&T are already setting up VoIP calling plans in several markets in the United States and the FCC is looking seriously at the potential ramifications of VoIP service. The paper relates that there are three different types of VoIP service in common use today: (1) ATA , the simplest and most common way, which is to connect a standard phone to a computer or internet connection for use with VoIP; (2) IP phones, specialized phones, which look like normal phones with a handset, cradle and buttons but, instead of having the standard RJ-11 phone connectors, have an RJ-45 Ethernet connector and (3) computer-to-computer, which is the easiest way to use VoIP and does not even require paying for long-distance calls. Illustrations.
Table of Contents
VOIP- An Overview
History of VOIP
Making calls through VOIP
Main Features of VOIP
VOIP: Difference from Standard Phone System: (Circuit Switching)
The VOIP Phone System: Packet Switching
The Advantage of VOIP
VOIP Hurdles
Overcoming the hurdles - CODECS
VOIP - For the business world
VOIP -In the United States
Future of VOIP
Conclusion
From the Paper:
"In a conventional phone conversation, while one are talking; the other party is listening, which means that only half of the connection is in use at any given time. Based on that, we can surmise that we could cut the file in half, down to about 4.7 MB, for efficiency. Plus, a significant amount of the time in most conversations is dead air -- for seconds at a time, neither party is talking. If we could remove these silent intervals, the file would be even smaller. Then, instead of sending a continuous stream of bytes (both silent and noisy), an option was devised of sending just the packets of noisy bytes when one created them, that is formed the basis of a packet-switched phone network, the alternative to circuit switching."
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