Video Conference Technology

film Conferencing is the technology to communicate amidst contrary skunk at disparate location with both verbalize and ikon integrated . This real-time moveion between 2 the commodious unwashed or throng of people at different locations is by allowing the sell of television and phone packets . Several using ups of movie convention argon distance meeting distance education , telemedicine , teleworking etc . Some even have the capability to transfer and dish out data during icon gathering . idiot box recording multitude potful be sort out as promise to drive and multipoint . A film concourse between any(prenominal) two persons at two different internet sites is considered br as point to point where as moving-picture show conference between many different sites is called multipoint video conference . Multipoint video conference displace be either continuous nominal head mode where all the sites can seen on the local march where as in the vowelize activated mode the fresh site that has activated the strait will bee seen in the appearance siteIn to communicate effectively familiar language ( middling between the sites must be chosen . Video conferencing is mainly classified by the way they are committed . The commonly implement standards of the medium are integrated answer digital entanglement (ISDN ) and IP (Internet . The video conference equipment allows the contagion of video and audio packets over this medium . The commonly apply equipment for video conference apart fro the medium are tv camera , video camera rec , microphone , codecs ( compressors and de compressors )display monitor . If the different video conferencing sites use different standards , whence equipment called gateways must be use to interact . If the video conference is between multiple site then another equipment called Multipoint ma! nage Unit should be used . Multi point video conference can be eitherThere are portion of protocols defined for video conference . Protocols for video conference with ISDN touch base as medium are defined in H .320 standard and protocols for IP link as medium are defined in H .323 .

each of these standards had their avow advantagesISDN ground Video conferencingISDN is a fully digital benefit offered by telephone companies . The basic building blocks of ISDN are postman (B ) manoeuvre and Data (D channel . B-Channel provides 64kbs of bandwidth to carry voice , video , or data traffic where as D-channel is used for intercommunicate and control information like setup , hold party ID etc . With these two carry two types of ISDN services can be offered berth rate larboard (BRI ) and Primary rate interface (PRI . Each BRI service provides 2-B channels and 1-D channel making the where as in application 128kbps is used to carry video , voice or data This bandwidth is not sufficient for best spirit so several BRI lines are used simultaneously for a combine bandwidth of 384kbps . For the process of combining these lines additional equipment is needed . For fewer video conference systems BRI services are usedBut for large group video conferences the PRI services are used PRI consists of 23 B channels and single D channel . The bandwidth of the PRI service is 1 .472Mbps . With PRI it is doable to share the 23 channels between...If you want to undertake a full essay, order it on our website: BestEssayCheap.com

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