Telecommunications Glossary of terms used on this site

There are 236 entries in this glossary.
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Term Definition

Virtual Channel

Virtual Circuit

A permanent (PVC) or switched (SVC) logical circuit created to facilitate reliable communication between two network devices or endpoints.

Aliases (separate with |): VC
Virtual LAN

A group of devices or endpoints on one (1) or more LANs that are capable of communicating as if they were physically connected.

Aliases (separate with |): VLAN
Virtual Private LAN Service

Virtual private LAN service is a method to extend a switched Ethernet LAN over an IP/MPLS (Internet Protocol / Multiprotocol Label Switching) network.

Aliases (separate with |): VPLS
Virtual Private Network

A virtual private network or VPN is a network that uses either a public telecommunication infrastructure, such as the Internet, or a carrier network to provide remote offices or individual users with secure access to their organization's network. A VPN is an evolution from previous network implementations based on private or lines leased by individual organizations.

Aliases (separate with |): VPN
Voice over IP

Voice over IP, or Voice over Internet Protocol, or more simply VoIP, is generalized telecommunications terminology describing a group of transmission and communications protocols, used to deliver a series of voice packets over IP (Internet Protocol) based private network, or a public network such as the Internet. VoIP makes use of session control protocols to setup and tear down calls, and audio codecs which encode speech in various digital formats and faciliate its transmission over IP networks.

Aliases (separate with |): VoIP
Voice over MPLS

Voice over MPLS, Voice over Multiprotocol Label Switching (networks), or more simply VoMPLS is a method of leveraging carrier or service provider MPLS networks to transport and deliver VoIP, either by encapsulating Voice within IP, without IP using label switched path (LSP) based tunnels, or within MPLS packets.

Aliases (separate with |): VoMPLS

A Virtual Tributary, or VT, is a Synchronous Optical Network (SONET) signal which transports payloads that are smaller than a STS-1 (44.736 Megabits per second).

Aliases (separate with |): Virtual Tributary

Wide Area Network


Wavelength Division Multiplexing is a fiber optic communications technology where multiple optical wavelengths are multiplexed over a single physical fiber media for the purpose of increasing the efficiency of bi-directional data transmissions.

Aliases (separate with |): Wavelength Division Multiplexing
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