Web conferencing is also used as associate umbrella term for numerous varieties of on-line cooperative services as well as net seminars ("webinars"), webcasts, and peer-level net conferences. it's going to even be employed in a a lot of slender sense to refer solely to the peer-level net meeting context, in an effort to clarify it from the opposite varieties of cooperative sessions.  word associated with these technologies is inexact, and no typically specified supply or standards organization exists to supply a longtime usage reference.
In general, net conferencing is formed attainable by web technologies, notably on TCP/IP connections. Services might permit period point-to-point communications still as multicast communications from one sender to several receivers. It offers knowledge streams of text-based messages, voice and video chat to be shared at the same time, across geographically distributed locations. Applications for net conferencing embrace conferences, coaching events, lectures, or shows from a web-connected pc to different web-connected computers.
1 Installation and Operation
4.1 Deployment models
6 Software and repair suppliers
7 See also
9 External links
Installation and Operation
Web conferencing software package is invoked by all participants in an exceedingly net meeting. Some technologies embrace software package and practicality that differs for presenters and attendees. software package might run as an online browser application (often wishing on Adobe Flash, Java, or Webster to supply the operational platform). different net conferencing technologies need transfer and installation of software package on every participant's pc, that is invoked as a neighborhood application. several net conferencing vendors offer the central property and provisioning of meeting "ports" or "seats" as a hosted net service, whereas others permit the net conference host to put in and run the software package on its own native servers. Another installation choice from sure vendors permits to be used of a proprietary pc appliance that's put in at the hosting company's physical location.
Depending on the technology getting used, participants might speak and hear audio over commonplace phonephone lines or via pc microphones and speakers. Some product give use of a digital camera to show participants, whereas others might need their own proprietary coding or externally-provided coding of a video feed (for example, from an expert video camera connected via associate IEEE 1394 interface) that's displayed within the session.
Vendor-hosted net conferencing is typically commissioned as a service supported one in all 3 evaluation models: a set value per user per minute, a monthly or annual flat fee permitting unlimited use with a set most capability per session, or a slippy rate fee supported the quantity of allowed meeting hosts and per-session participants (number of "seats").
Presentation of visual materials most frequently is accomplished through one in all 2 primary methodologies. the net conferencing software package might show participants a picture of the presenter's monitor (or desktop). Again, relying upon the merchandise, the software package might show the complete visible desktop space or might permit choice of a physical space or application running on the presenter's pc. The second technique depends on associate transfer and conversion method (most normally consisting of Microsoft PowerPoint files, different Microsoft workplace electronic documents, or Adobe PDF documents).
The term "webinar" may be a portmanteau of net and seminar, which means a presentation, lecture, or workshop that's transmitted over the net. The coined term has been attacked for improper construction, since "inar" isn't a legitimate root. Webinar JEO review was enclosed on the Lake Superior University 2008 List of Banished Words, however was enclosed within the Merriam-Webster lexicon that very same year. 
The term "webcast" derives from its original similarity to a radio or tv broadcast. Early usage referred strictly to transmission and consumption of streaming audio and video via the planet Wide net. Over time, webcast software package vendors have additional several of constant purposeful capabilities found in webinar software package, blurring the excellence between the 2 terms. Webcasts ar currently doubtless to permit audience response to polls, text communication with presenters or different audience members, and different two-way communications that complement the consumption of the streamed audio/video content.
Other typical options of an online conference include:
Slideshow shows - wherever pictures ar given to the audience and markup tools and a far off mouse pointer ar wont to have interaction the audience whereas the presenter discusses slide content.
Live or streaming video - wherever full motion digital camera, digital video camera or multi-media files ar pushed to the audience.
VoIP - Real time audio communication through the pc via use of headphones and speakers.
Web tours - wherever URLs, knowledge from forms, cookies, scripts and session knowledge are often pushed to different participants enabling them to be pushed although net based mostly logons, clicks, etc. this kind of feature works well once demonstrating websites wherever users themselves also can participate.
Meeting Recording - wherever presentation activity is recorded on the consumer aspect or server aspect for later viewing and/or distribution.
Whiteboard with annotation (allowing the presenter and/or attendees to focus on or mark things on the slide presentation. Or, merely create notes on a blank whiteboard.)
Text chat - For live question and answer sessions, restricted to the individuals connected to the meeting. Text chat is also public (echoed to any or all participants) or personal (between a pair of participants).
Polls and surveys (allows the presenter to conduct queries with multiple selection answers directed to the audience)
Screen sharing/desktop sharing/application sharing (where participants will read something the presenter presently has shown on their screen. Some screen sharing applications give remote desktop management, permitting participants to control the presenters screen, though this can be not wide used.)
Web conferencing technologies aren't standardized, that has reduced ability and transparency and hyperbolic platform dependence, security problems, value and market segmentation. In 2003, the IETF established a working party to determine a regular for net conferencing, referred to as "Centralized Conferencing (xcon)". The planned deliverables of xcon include:
A binary floor management protocol. Binary Floor management Protocol (BFCP) revealed as RFC 4582
A mechanism for membership and authorization management
A mechanism to control and describe media "mixing" or "topology" for multiple media varieties (audio, video, text)
A mechanism for notification of conference connected events/changes (for example a floor change)
Web conferencing is out there with 3 models: hosting service, software package and appliance.
An appliance, in contrast to the web hosted answer, is obtainable as hardware. it's additionally referred to as "in-house" or "on-premises" net conferencing. it's wont to conduct live conferences, remote coaching, or shows via the net.
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