Glossary for Lync Server 2013


Topic Last Modified: 2014-02-14

This topic contains terms and definitions that pertain to Microsoft Lync Server 2013 and Microsoft Lync 2013.

Term Definition

A/V Edge server

Enables internal users to share audio and video data with external users (that is, users who are not logged on to your internal network).


A third-party organization that provides audio conferencing services over public switched telephone network (PSTN).

active monitoring

Gives Lync system administrators the ability to monitor pools, servers, and networks across data centers through the public Internet.

audio conferencing provider

A third-party organization that provides audio conferencing services over public switched telephone network (PSTN).

Audio Test service

A built-in tool whereby a test call can be made before the actual call is. This ensures that there aren't any severe network or other issues that could affect call quality.


Sent to more than one recipient. In communications and on networks, a broadcast message is one distributed to all stations.

bypass call

A call that bypasses the Mediation Server.

Call Park orbit

A number assigned to a parked call by the Call Park application.

Call via Work

A callback option whereby an outgoing call can be made by using the work number. The person who is receiving the call will see the work number of the caller, in their caller ID.


The person whom, or place that, a caller is calling.


The person who is calling another person or place.


A digital video device that is used for recording moving images and audio in a digital format.

Central Management Server

The server role (one per organization) on one Front End pool in the deployment that manages and deploys basic configuration data to all servers that are running Lync Server. Also provides Lync Server Management Shell and file transfer capabilities.

client version filter

Restricts the client versions that are used in a Lync Server environment.

client version policy

A set of client version rules that defines the actions to be taken when users try to log on with specific clients and client versions.

conference call

A telephone conversation between three or more people.

conferencing service

An internally or externally hosted service for users to host multiparty conferences from their computers.

Contacts list

A list of people, groups, or organizations with whom you communicate.

Conversation History

The folder in Outlook where instant messages and phone conversations are stored.

data conferencing

A method of real-time communication wherein participants share and collaborate on several data and document types. The session can be hosted on an in-house server, an Internet-based service, or both.

dial-out conferencing

A feature whereby the A/V Conferencing Server calls the user, and the user answers the phone to join the conference.

dual-tone multiple-frequency

The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies.

Dynamic Memory

A Hyper-V feature in which the memory available to a running virtual machine is adjusted in response to changes in the amount of memory required by the virtual machine.

Edge pool

A single computer pool or a multiple computer pool that, by default, supports remote users in your organization who sign in to Lync Server from outside the firewall by using a virtual private network (VPN).

Enhanced 9-1-1

A service that provides information about the location of a caller who calls 9-1-1.

enhanced presenter controls

A collection of Lync Meeting host and presenter controls that optimizes for the type of meeting, size of audience, content, and/or video sources available to participants.

Front End pool

A set of Front End Servers, configured identically, that work together to provide services for a common group of users.

IM Conferencing service

A service that runs on a Lync Server or Office Communications Server front-end server to mix and manage inputs from multiple clients in a multiparty instant messaging (IM) session.

Join Launcher

Part of the existing Lync Web App IIS web component. Lets users optionally join meetings by using a mobile device.

Location Information Server

A network node originally defined in the National Emergency Number Association i2 network architecture that addresses the intermediate solution for providing Enhanced 9-1-1 (E9-1-1) service for VoIP telephony users.

Location Information service

A web service that manages a table of network elements and locations for use by clients of Enhanced 9-1-1 (E9-1-1).

long message

A message in a persistent chat room that exceeds the character limit. If the character limit is exceeded, the message will show as "long message."

Lync 2013 VDI plug-in

Provides the ability to have softphone-based audio, video, and meetings (peer-to-peer and multiparty) without the problems of latency, jitter, and packet loss.

Lync Meeting

Denotes the experience with Lync that can be scheduled, or ad-hoc. A Lync Meeting provides the ability to interact with people through video, audio, instant messaging, and content sharing.

Lync Meeting window

Denotes the Conversation window that handles escalations (peer-to-peer to conference) and scalable views that display people and content together inside a Lync Meeting.

Lync Server Management Shell

The management command line interface built on Windows PowerShell technology that includes a set of cmdlets to help control administration and automation.

Lync Web Scheduler

A web-based meeting scheduling and management tool for users who don’t have access to Microsoft Outlook, or are on an operating system not based on Windows. With Lync Web Scheduler, you can create new meetings, change your existing meetings, and send invitations using your favorite email program.


An optional feature of Lync Online that enables users to make calls to, and receive calls from, the traditional network by using Lync. This feature is available to Voice Plan customers only, and administrators must sign in with a Lync-to-phone provider to get the feature.


A device that converts sound waves into analog electrical signals. Additional hardware can convert the microphone's output into digital data that a computer can process; for example, to record multimedia documents or analyze the sound signal.

Microsoft Lync Server Mobility Service

This service supports Lync functionality, such as instant messaging (IM), presence, and contacts on the following mobile devices: iPhone, iPad, Android, Windows Phone, and Nokia.

Microsoft Push Notification Service

A notification service that sends new events, such as an instant messaging invitation or a missed call, to the Windows Phone mobile device.

multiple points of presence

The ability of a single user to sign in to a Lync Server or Office Communications Server server with multiple clients.

network inter-site policy

Defines bandwidth limitations between sites that are directly linked within a call admission control (CAC) configuration.

network regions

The network hubs or backbones that are used in the configuration of call admission control, E9-1-1, and media bypass. They interconnect parts of a network across multiple geographic areas, and every network region must be associated with a central site.

network site

A collections of subnets with similar bandwidth, for example, a branch office location, a set of buildings, or a campus.

Office Web Apps Server

A server role used with Office Web Applications in Lync Server to handle the sharing and rendering of PowerPoint presentations.

OneNote share

The feature that lets users create and share OneNote meeting notes in a Lync Meeting. Notes appear as docked in a Lync Meeting, with participant lists that can be updated in meeting notes for participants to see.

outbound translation rule

A rule that converts phone numbers to the local dialing format for interaction with private branch exchange (PBX) systems.

persistent chat

A type of chat in which messages are posted to a chat room where they can be viewed and responded to in real time by multiple participants. Users can search for other rooms by name, member/owner, keywords, and content across groups from Lync.

personal preview

A video preview for a Lync user that provides options to answer with video from within the notification.

presence status

One of the attributes that makes up presence and that indicates a person’s availability and willingness to communicate.


Indicates the sharing activity of presenting a PowerPoint presentation. Only the PowerPoint document is shown and only the presenter can edit the content being presented.

PSTN usage records

Public switched telephone network (PSTN) usage records specify a class of call (such as internal, local, or long distance) that can be made by various users or groups of users in an organization.

public cloud

A cloud infrastructure typically owned and managed by an organization that sells cloud services. The resources are shared by the general public or a group of customers in order to optimize utilization rates.

public IM connectivity contact

A contact who uses an instant messenger client from AOL, Yahoo!, MSN, or the Windows Live network of Internet services.

Quick Lync

A menu bar that appears beside the picture area of a contact in the Lync Contacts list that shows the available communication modes: IM, Call, Video, and View card.


A feature that transfers a call back to the person who parked it, after a specified amount of time, so a caller doesn't remain on hold indefinitely.

Scalable Video Coding

A video compression standard that encodes high-quality video bitstreams. Support for the capability enables the conferencing server to determine how bitstreams should flow among receiving clients, based on the capabilities and bandwidth of the receiving endpoint.

secret chat room

In the Lync persistent chat feature, a room that has been set up with the most restricted level of privacy. Only members of a secret chat room can find it, see who is participating in it, follow it, or read and post in it.

Survivable Branch Server

A server running Windows Server that meets specified hardware requirements, and that has Lync Server Registrar and Mediation Server software installed on it. Like Survivable Branch Appliances, this device can provide voice mail survivability for branch users during a WAN outage.

topic feeds

Feeds that provide information and notifications based on the persistent chat room that you are following.

Topology Builder

An installation component of Lync Server used to display, adjust, and validate a planned topology.

User Services

Configuration settings that are used to help maintain presence information and manage conferencing.

User Services pool

Provides presence information and helps to manage preferences.

User Services service

A Lync Server service that is used to help maintain presence information for users and to manage meetings and conferences.

video call

A call that connects Lync users with peer-to-peer capabilities. Users can start a video call by pointing to a contact in the Contacts view and then clicking the video call icon.

Video Capable

A status on a Lync contact card that indicates a camera is enabled.

video quality notifications

Alerts to Lync users about the quality of the network, computer, camera, and lighting conditions.

Video Spotlight

A mode that enables presenters to select one person’s video feed so that every participant in the meeting sees that participant only.

voice policies

Define the following for each user, site, or organization that is assigned the policy: A set of calling features that can be enabled or disabled to determine the Enterprise Voice functionality that is available to users. Also, a set of PSTN usage records that define what types of calls are authorized.

voice route

A route that contains instructions that tell Lync Server how to route calls from Enterprise Voice users to phone numbers on the public switched telephone network (PSTN), or a private branch exchange (PBX).

web conferencing

Functionality supplied by the Web Conferencing service such as data sharing, and uploading documents and PowerPoint presentations, by using whiteboards and desktop sharing.