VoIP
Voice service carried on network IP. Initially, network infrastructure, the most widely deployed in the world was that of telephone networks. It was therefore necessary to adapt the transport of data to a medium that was not designed for this, including using Modems. Today, the situation was almost reversed: the network infrastructure deployed and most importantly, the more flexible since digital is that ofInternet and its Protocol IP. It is this infrastructure that is now destined to carry everything, and it is the voice should be adapted to the network designed for data. Accelerating flow of arteries interconnection of the Internet, offers "quality service" such as guaranteed bandwidth, and the implementation of an equivalent system SS7 telephone signaling (Establishment and communication outage, management supplementary services such as Call Waiting or transfer line) lay the true foundation of a service telephone transmission on the Internet effectively.
VPLS
VPLS is an Ethernet service metro, national and global extends the LAN (LAN) client to multiple locations by providing connectivity multipoint Layer 2 fully meshed. In regard to service providers, VPLS relies on the MPLS to create a reliable, scalable and operationally efficient.
For the companies, VPLS uses Ethernet to provide a multipoint service simple and economic agreements attached QoS for different traffic types.
VPN
Extended Network Private prepared by creating permanent links between networks of specialized enterprises through public networks to meet the needs of resource-sharing users. Main advantage of the system integration mechanism Encryption and d 'Authentication to maintain the virtual network of unauthorized users.
VRML
The VRML (Virtual Reality Modeling Language) Is a description language ofvirtual worlds in 3 dimensions. Version 1, born in 1994, only allowed to create enough static worlds. Version 2 introduced in 1996, allows the creation of dynamic 3D world with particular sound.
VRML programs can describe simple shapes (points, lines, polygons) or complex (spheres, cubes, cones, cylinders ...), text, images, animations, lighting, sound, hyperlinks, and their arrangement in space, their textureTheir colorTheir material ...
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