V

Volt

V.35

ITU Interface Recommendation, V.35

The interface used with the LIMV35 card.

VA

Volt-Ampere

VAC

Voltage Alternating Current

VAS

Value-Added Service. An enhancement added to a product or service by a company before the product is offered to customers.

Voice Application Server. VAS accelerates the development of advanced voice applications allowing customers to deliver content, services, and transactions through any phone, anytime, anywhere.

VCC

Virtual Channel Connection

Voice Call Continuity. The 3GPP has defined the Voice Call Continuity specifications to describe how a voice call can be persisted, as a mobile phone moves between circuit switched and packet switched radio domains.

VCI

Virtual Channel Identifier

vCPU

Virtual CPU

VDC

Virtual Data Center

Represents a virtual machine in a data center.

Vdisk

Virtual Disk

A grouping of individual disks performed by the shared storage system. Hosts do not see or have access to Vdisks, only to Volumes. Each Volume resides within one Vdisk.

VDT

Video Display Terminal

VDU

Video Display Unit

Virtualization Deployment Unit. Construct that can be used in an information model, supporting the description of the deployment and operational behavior of a subset of a VNF, or the entire VNF if it was not componentized in subsets. NOTE: In the presence of a hypervisor, the main characteristic of a VDU is that a single VNF or VNF subset instance created based on the construct can be mapped to a single VM. A VNF may be modeled using one or multiple such constructs, as applicable.

Vertical Scaling

Vertical scaling adds or releases resources to and from a virtual machine (VM), for example, by assigning more virtualized processors, RAM, or storage from the NFV Infrastructure (NFVI).

V-Flex

Voice mail Flexible Routing

An advanced database application based on the industry proven EAGLE. Deployed as a local subsystem on the EAGLE platform, V-Flex centralizes voice mail routing.

VGTT

Variable Length GTT

A feature that provides the ability to provision global title entries of varying lengths to a single translation type or GTT set. Users are able to assign global title entries of up to 10 different lengths to a single translation type or GTT set.

VIA

Records the SIP route taken by a request, and routes a response back to the originator.

VIM

Virtual Infrastructure Manager

A functional block that is responsible for controlling and managing the NFVI compute, storage and network resources, usually within one operator's Infrastructure Domain (e.g. NFVI-PoP) (ETSI). Examples of VIMs include VMWare, vCloud Director, and OpenStack.

VIOL

A value displayed on an application GUI that indicates that the client brower's Java policy file is incorrect.

VIP

Virtual IP Address

Virtual IP is a layer-3 concept employed to provide HA at a host level. A VIP enables two or more IP hosts to operate in an active/standby HA manner. From the perspective of the IP network, these IP hosts appear as a single host.

Virtual CDF

Refers to the DSR (node ID) facing towards a CTF when the DSR applies topology hiding to messages destined to the CTF. CPF will configure two Virtual CDF local nodes.

Virtual CPU

Virtual CPU created for a VM by a hypervisor. In practice, a vCPU may be a time sharing of a real CPU and/or in the case of multi-core CPUs, it may be an allocation of one or more cores to a VM. It is also possible that the hypervisor may emulate a CPU instruction set such that the vCPU instruction set is different to the native CPU instruction set (emulation will significantly impact performance).

Virtual CTF

Refers to the DSR (node ID) facing towards a CDF when the DSR applies topology hiding to messages destined to the CDF. CPF will configure one Virtual CTF local node.

Virtual Data Center

See VDC

Virtual Infrastructure Manager (ETSI)

See VIM

Virtual Machine

See VM

Virtual Network

Virtual network routes information among the network interfaces of VM instances and physical network interfaces, providing the necessary connectivity The virtual network is bounded by its set of permissible network interfaces.

Virtual Network Function

See VNF

Virtual Network Function Descriptor

See VNFD

Virtual Network Function Instance

Run-time instantiation of the VNF software, resulting from completing the instantiation of its components and of the connectivity between them, using the VNF deployment and operational information captured in the VNFD, as well as additional run-time instance-specific information and constraints.

Virtual Network Function Manager

See VNFM

Virtual Network Function Package (VNF Package)

Virtual archive that includes a VNFD, the software image(s) associated with the VNF, as well as additional artefacts, e.g. to check the integrity and to prove the validity of the archive.

Virtual Storage

Virtual non-volatile storage allocated to a VM.

Virtual Template

Virtual template is similar to a symbolic link in Linux system. A virtual template links to a standard configuration template. This template is efficient a template that has been associated to multiple MPE or MRA devices must be replaced with another template.

Virtualization Container

Partition of a compute node that provides an isolated virtualized computation environment Examples of virtualization container includes virtual machine and OS container.

Virtualization Deployment Unit

VISM

VLAN

See VDU

Voice Interworking Service Module

Virtual Local Area Network

A logically independent network. A VLAN consists of a network of computers that function as though they were connected to the same wire when in fact they may be physically connected to different segments of a LAN. VLANs are configured through software rather than hardware. Several VLANs can co-exist on a single physical switch.

VLR

Visitor Location Register. A component of the switching subsystem, within a GSM network. The switching subsystem includes various databases which store individual subscriber data. One of these databases is the HLR database or Home Location Register; and the VLR is another.

Virtual Location Register

VM

Virtual Machine

Virtualized computation environment that behaves very much like a physical computer/server.

A VM has all its ingredients (processor, memory/storage, interfaces/ports) of a physical computer/server and is generated by a Hypervisor, which partitions the underlying physical resources and allocates them to VMs. Virtual Machines are capable of hosting a VNF Component (VNFC).

VMAC

Virtual MAC. Implemented by VRRP.

VMSC

Visited MSC

Voice Mail Service Center

VNF

Virtual Network Function

A network node function that executes on one or more virtual machines.

VNFC

Virtual Network Function Component

Internal component of a VNF providing a VNF Provider a defined sub-set of that VNF's functionality, with the main characteristic that a single instance of this component maps 1:1 against a single Virtualization Container.

VNF Component

A subset of a VNF functionality where each component is a special type of a virtual application with its processes running in a virtual machine.

VNFD

Virtual Network Function Descriptor

Configuration template that describes a VNF in terms of its deployment and operational behavior, and is used in the process of VNF on-boarding and managing the lifecycle of a VNF instance.

VNFM

Virtual Network Function Manager

Functional block that is responsible for the lifecycle management of VNFs.

VOB

Versioned Object Base

Version Object Base. Folder within ClearCase for storing related files.

VoD

Video on Demand

Voice over LTE

See VoLTE

Voice over Wi-Fi

See VoWiFi

VoIP

Voice Over Internet Protocol

Voice communication based on the IP protocol competes with legacy voice networks, but also with Voice over Frame Relay and Voice and Telephony over ATM. Realtime response, which is characterized by minimizing frame loss and latency, is vital to voice communication. Users are only prepared to accept minimal delays in voice transmissions.

VoLTE

Voice over LTE

Technology specification that defines the standards and procedures for delivering voice communication and data over 4G LTE networks. It is one method for creating, provisioning, and managing high-speed voice, video, and messaging services on a 4G wireless network for mobile and portable devices.

Volume

The smallest unit of allocation of shared storage that PMAC/SSM can provide for a host. A host sees a Volume as an attached disk.

VOM

Volt Ohm Meter

VON

Voice Over Net

VoP

Voice over Packet

VoWiFi

Voice over Wi-Fi

Refers to the use of IEEE 802.11 wireless LANs (WLANs) to transport Voice over IP (VoIP) traffic. The technology has consumer, business and service provider applications. It is used over private WLANs, home Wi-Fi networks and public Wi-Fi hotspots.

VPC

Virtual Path Connection

Virtual Point Code

VoIP Positioning Center

VPCI

Virtual Path Connection Identifier

V-PCRF

Visited PCRF

VPI

Virtual Path Identifier

VPLMN

Visited Public Land Mobile Network

The PLMN to which a mobile subscriber has roamed when leaving the subscriber’s Home Public Land Mobile Network.

VPN

Virtual Private Network

A VPN is set up using customer-specific logical subnets within a public dial-up network. These can be voice communications networks, X.25, Frame Relay or ISDN.

VR

Validation and Ramp

VRM

Virtual Reality Modeling

VRRP

Virtual Router Redundancy Protocol

VRU

Voice Recognition Unit

VSCCP

VxWorks Signaling Connection Control Part

The application used by the Service Module card to support EPAP-related features and LNP features. If an EPAP-related or LNP feature is not turned on, and a Service Module card is present, the VSCCP application processes normal GTT traffic.

VSMSC

Virtual SMSC

Virtual SMSC is a feature of an Acision SMSC to have separate SMS Application routing and different billing file content for MO messages with a different SMSC Address.

VTIM

Virtual Terminal Input Message

VTOM

Virtual Terminal Output Message