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Voice over Internet Protocol (Voice over IP, VoIP) is a family of technologies, methodologies, communication protocols, and transmission techniques for the delivery of voice communications andmultimedia sessions over internet Protocol (IP) networks, such as the Internet. Other terms frequently encountered and often used synonymously with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone.
Internet telephony refers to communications services---Voice, fax, SMS, and/or voice-messaging applications---that are transported via the Internet, rather than the public switched telephone network(PSTN). The steps involved in originating a VoIP telephone call are signaling and media channel setup, digitization of the analog voice signal, encoding, packetization, and transmission as Internet Protocol (IP) packets over a packet-switched network. On the receiving side, similar steps (usually in the reverse order) such as reception of the IP packets, decoding of the packets and digital-to-analog conversion reproduce the original voice stream.[1] Even though IP Telephony and VoIP are terms that are used interchangeably, they are actually different; IP telephony has to do with digital telephony systems that use IP protocols for voice communication while VoIP is actually a subset of IP Telephony. VoIP is a technology used by IP telephony as a means of transporting phone calls.[2]
VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio via an audio stream. The codec used is varied between different implementations of VoIP (and often a range of codecs are used); some implementations rely on narrowband and compressed speech, while others support high fidelity stereo codecs.
There are three types of VoIP tools that are commonly used; IP Phones, Software VoIP and Mobile and Integrated VoIP. The IP Phones are the most institutionally established but still the least obvious of the VoIP tools. The use of software VoIP has increased during the global recession of 2008-2010, as many persons, looking for ways to cut costs have turned to these tools for free or inexpensive calling or video conferencing applications.[citation needed] Software VoIP can be further broken down into three classes or subcategories; Web Calling, Voice and Video Instant Messaging and Web Conferencing. Mobile and Integrated VoIP is just another example of the adaptability of VoIP. VoIP is available on many smartphones and internet devices so even the users of portable devices that are not phones can still make calls or send SMS text messages over 3G or Wi-Fi.[3]
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When was Telnet first open for business?
Telnet, a network protocol, first opened for business in 1969. It was one of the first internet standards. It is still one of the standards used today.
Who invented postal service first?
Sir Rowland Hill invented the first postal service
What is the diference between Internet and Internet?
The first one has a capital i.
Which version of INSTANT MESSENGER is invented first?
PLATO
What inventor changed the way people communicated?
The first answer is that Samuel Morse invented the Morse Code. And the telegraph. The second answer is that Alexander Graham Bell invented the very first telephone.
What is the first protocol used by the ARPANET?
The first protocol that was used by the APARNET was called the Internet Protocol.
Internet Protocol VERSION 6.0?
Paul danso was the first to bring about internet protocol service in 1970s
Who invented the ip?
Ip was invented by Vinton cert and Robert kahn in 1973 bt it was lanched or publisdhed in 1973.
What is the primary protocol suite responsible for message transmission on the Internet?
The Internet Protocol (IP) is a protocol used for communicating data across a packet-switched internetwork using the Internet Protocol Suite, also referred to as TCP/IP. IP is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the task of delivering distinguished protocol datagrams (packets) from the source host to the destination host solely based on their addresses. For this purpose the Internet Protocol defines addressing methods and structures for datagram encapsulation. The first major version of addressing structure, now referred to as Internet Protocol Version 4 (IPv4) is still the dominant protocol of the Internet, although the successor, Internet Protocol Version 6 (IPv6) is being deployed actively worldwide.
Internet was first used for military purpose?
Internet was first used for military purpose which used the concept of packet networking. ARPANET was the first internet protocol to be used for communication.
When was the virtual voice mail invented?
Visual voicemail first appeared on the market in 2007 when Apple's iPhone introduced the feature. Visual voicemail works by storing the video on a third party cloud service rather than the phone's network.
Who invented the first internet?
ANSWER : use this link... internet
What is most familiar protocol to you?
There are various protocols ftp: file transfer protocol smtp: simple mail transfer protocol pop3: post office protocol ip: internet protocol tcp: transmission control protocol ospf: open shortest path first igrp: interior gateway routing protocol eigrp: enhanced interior gateway routing protocol rip: routing information protocol http: hyper text transfer protocol udp: user datagram protocol icmp: internet control message protocol
Where was hypertext invented?
HyperText, or as used in the Internet HTTP (HyperText Transfer Protocol) was invented at CERN, in Geneva, Swizerland. HyperText was invented by Tim Berners Lee for the World Wide Web. Source(s) I did a Bio. on Tim Berners-Lee
How was the Internet found?
The internet began to be develop in the late 1960s and early 1970s which was the first network to use Internet Protocol. This lead to the development of interworking.
Which situation you are using Open Shortest Path First?
OSPF, also known as Open Shortest Path First, is a routing protocol that uses a link-state for an IP or Internet Protocol. A situation it is used in would be an exterior gateway protocol.
How was the found?
The internet began to be develop in the late 1960s and early 1970s which was the first network to use Internet Protocol. This lead to the development of interworking.
