VOIP is common term which means voice over internet protocol. Voice communication is the hottest feature now a days. The success of IP in becoming a world standard for data networking has led to its adaption to voice networking. Hardware and software both are required for telephony. Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line (PSTN)that may only allow you to call other people using the same service, while others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers.
[...] McKnight Voice Over IP by Uyless Black Switching to VoIP by Ted Wallingford Carrier Grade Voice Over IP by Daniel Collins VoIP Made Easy: The Ideal Introduction to Internet Telephony by Bill Stuckey http://www.fcc.gov/voip/ http://www.tech-faq.com/voip.shtml http://www.hosted-voice-solutions.com/history-of-voip.html http://www2.rad.com/networks/2001/voip/history.htm Voice communication History Traditional PSTN is based on circuit switched network, major disadvantage of circuit switching is that once a circuit is established, it consumes the full-predefined bandwidth, no matter if the call contains many silent periods. The demand was for a technology that will enable easy and rapid growth and updating, together with efficient use of bandwidth that will enable more simultaneous connections with larger volumes on the same bandwidth. The Internet Protocol part of the TCP/IP suite (developed by the U.S. [...]
[...] McKnight Voice Over IP by Uyless Black Switching to VoIP by Ted Wallingford Carrier Grade Voice Over IP by Daniel Collins VoIP Made Easy: The Ideal Introduction to Internet Telephony by Bill Stuckey http://www.fcc.gov/voip/ http://www.tech-faq.com/voip.shtml http://www.hosted-voice-solutions.com/history-of-voip.html http://www2.rad.com/networks/2001/voip/history.htm Default Design Voice communication History Traditional PSTN is based on circuit switched network, major disadvantage of circuit switching is that once a circuit is established, it consumes the full-predefined bandwidth, no matter if the call contains many silent periods. The demand was for a technology that will enable easy and rapid growth and updating, together with efficient use of bandwidth that will enable more simultaneous connections with larger volumes on the same bandwidth. The Internet Protocol part of the TCP/IP suite (developed by the U.S. [...]
[...] The idea was to compress the voice signal and translate it into IP packets for transmission over the Internet. This "first generation" VoIP application suffered from delays (due to congestion), disconnections, low quality (both due to lost and out of order packets) and incompatibility. VOIP Today From 2000 to date, the use of VoIP has increased rapidly. Currently there are two technical standards being used for VoIP data packet transfer and switching: H.323 and SIP. Each technology is being developed by one or more major manufacturers. [...]
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