Emulates a physically circuit switched network connection over a packet switched network. Presents data as a "virtual circuit" so higher protocols do not have to deal with the overhead of handling frames.
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Virtual Local Area Network (VLAN)
A group of devices on one or more LANs that are configured through software to act as if they were attached together physically. Because it is a logical, software association rather than through physical hardware, VLAN membership is easier to manage.
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Virtual Machine (VM)
A Virtual Machine (VM) is a compute resource that uses software instead of a physical computer to run programs and deploy apps.
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Virtual Path Identifier (VPI)
Eight bit field in the header of an ATM cell. Together with the VCI (virtual channel identifier), it identifies the next destination of a cell as it passes through an ATM switch.
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Virtual Private LAN Service (VPLS)
The Virtual Private LAN Service over MPLS-TP allows you a mesh of sites any-point-to-any-point with Layer 2 tunnels for services such Ethernet connectivity and multicast video.
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Virtual Private Network (VPN)
Allows users to access a private, secured network over public TCP/IP infrastructure. Useful for traveling businessmen or salespeople to access an enterprise's intranet (internal network). Encrypts data at the IP level.
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Video Terminal (VT-100)
VT-100 is a type of terminal first built by DEC (Digital Electronics Corporation) in the 1970s. It's style and it's attributes were so popular that it became a de facto standard for terminal emulators. New monitors and computers since the 2000s have made the concept of a traditional video terminal obsolete. However, a new computer can run VT-100 emulator software to interface with legacy equipment. Many Loop products can connect to a computer's DB9 port. Then the user can open a VT-100 emulator software to access the device.
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Voice Quality Enhancement (VQE)
Noise reduction, echo cancellation, and other techniques used to improve the quality of a telephone call.
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