Click here to load reader

Dolby Conference Phone 3.0 configuration guide for iMeet · Dolby Fidelio ™ Dolby AccessLink ... advantage of this feature, you must plan ahead. For more information, see the Dolby

  • View
    7

  • Download
    1

Embed Size (px)

Text of Dolby Conference Phone 3.0 configuration guide for iMeet · Dolby Fidelio ™ Dolby AccessLink ......

  • Dolby ConferencePhone 3.0configuration guide foriMeet

    27 July 2016

  • Copyright© 2016 Dolby Laboratories. All rights reserved.

    For information, contact:

    Dolby Laboratories, Inc.1275 Market StreetSan Francisco, CA 94103-1410 USATelephone 415-558-0200Fax 415-863-1373http://www.dolby.com

    TrademarksDolby and the double-D symbol are registered trademarks of Dolby Laboratories. Followingare trademarks of Dolby Laboratories:

    Dolby®

    Dolby Atmos®

    Dolby Audio™

    Dolby Cinema™

    Dolby Theatre®

    Dolby Vision™

    Dolby Voice®

    Feel Every Dimension in Dolby™

    Feel Every Dimension™

    Feel Every Dimension in Dolby Atmos™

    Dolby Digital Plus™

    Dolby Advanced Audio™

    Dolby Home Theater®

    Dialogue Intelligence™

    Dolby Digital Plus Home Theater™

    MLP Lossless™

    Pro Logic®

    Surround EX™

    Dolby Digital Plus Advanced Audio™

    Dolby Fidelio™

    Dolby AccessLink™

    Dolby CaptiView™

    Dolby CineAsset™

    Dolby CineAsset Player™

    All other trademarks remain the property of their respective owners.

    Dolby Voice® and the Dolby Voice logo are registered trademarks of Dolby Laboratories.

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 2

    http://www.dolby.com

  • Contents

    1 Introduction 41.1 About this guide 41.2 Related documentation 41.3 Solution architecture 4

    1.3.1 Provisioning phones 71.3.2 TLS configuration 81.3.3 iMeet conferencing app 8

    2 Configuration procedures 92.1 Plugging in and setting up the phone automatically 92.2 Configuring 802.1x 92.3 Opening the phone web interface 102.4 Configuring the operation mode 112.5 Configuring NTP 122.6 Proxy configuration 13

    2.6.1 Specifying a proxy configuration with a PAC URL 142.6.2 Specifying a conferencing app-specific proxy server 15

    2.7 Specifying VLAN and LAN settings 172.8 Configuring the firewall 182.9 Setting the phone display name 192.10 Setting phones to personal mode 192.11 Reserved configuration parameters 20

    3 Adding CA certificates required for iMeet 213.1 Downloading CA certificates 213.2 Configuring CA certificates using Dolby Conferencing Console 213.3 Configuring CA certificates using your provisioning server 223.4 Configuring CA certificates using the phone web interface 233.5 Viewing CA certificates 23

    4 Configuring iMeet 254.1 Setting iMeet configuration parameters 254.2 Known issue with v3.0.0 and 3.0.1 firmware 284.3 Utility functions 29

    5 Troubleshooting 305.1 Error messages 305.2 Viewing information about the iMeet conferencing app 325.3 Support contacts 32

    Glossary 33

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 3

  • 1 IntroductionDeploying the Dolby Conference Phone with iMeet is a multi-step process that involvespreparing your network, Dolby Conferencing Console, or your provisioning server; installingcertificate authority (CA) certificates from PGi; and configuring the iMeet conferencing app.

    • About this guide• Related documentation• Solution architecture

    1.1 About this guideThis document provides instructions for configuring Dolby Conference Phones to work withiMeet. Use this document to guide you through the deployment process and ensure asuccessful and timely deployment at your site.

    Before you begin deployment, make sure that you have copies of the related documentation.You may need to refer to other documents for more information and specific instructions.

    1.2 Related documentationReview all of the Dolby Conference Phone documentation to ensure that the phone is set upcorrectly so that you have the best conferencing experience possible.

    These documents are available:

    • Dolby Conference Phone administrator's guide

    This guide explains how to set up and provision the Dolby Conference Phone.

    • Dolby Conference Phone quick start guide

    This guide describes the contents of the phone package, how to assemble the phone, andhow to connect the phone to the network. The quick start guide is included in the phonepackage. It is also available from the Dolby Conference Phone support pages.

    • Dolby Conference Phone 3.0 user's guide for iMeet

    This guide describes how to use the basic and advanced phone features, and how tocustomize the phone.

    • Dolby Conference Phone open source software guide

    This guide describes the open source software used in the Dolby Conference Phonesoftware.

    • Dolby Satellite Microphones quick start guide

    This guide describes the contents of the microphone package and how to connect themto the Dolby Conference Phone. The quick start guide is included in the microphonepackage. It is also available from the Dolby Conference Phone support pages.

    1.3 Solution architectureBefore you begin the deployment process, make sure that you understand what is involvedand how you can make the process go more smoothly.

    1.1 About this guide

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 4

  • ComponentsA deployment of the Dolby Conference Phone for iMeet utilizes a number of components.Understanding what they are and how they interact with each other can make yourdeployment processes easier, and may help you with troubleshooting later.

    The key components required for deployment are listed in this table.

    Component Description

    App deploymentserver

    PGi hosts an app deployment server in its service infrastructure.The app deployment server contains the conferencing app. The DolbyConference Phone downloads the conferencing app from the appdeployment server through HTTP or HTTPS when it boots up. The phonealso periodically checks and automatically downloads new versions itruns.The Dolby Conference Phone utilizes the HTTP proxy to download theconferencing app if a proxy is required for connecting to the appdeployment server.PGi deploys new versions of the conferencing app when they areavailable.

    iMeet conferencingapp, version 1.0

    The conferencing app is hosted on the app deployment server.

    Dolby ConferencePhone, version 3.0

    Dolby Conference Phones are deployed at your site. Based on itsconfiguration, the phone downloads the conferencing app from the appdeployment server.

    Service backendenabled for DolbyVoice

    The service backend enabled for Dolby Voice is the service infrastructurecreated and maintained by PGi. The conferencing app uses HTTP,WebSocket, SIP (Session Initiation Protocol), and Real-time TransportProtocol (RTP) to communicate with the service back end.

    Dolby ConferencingConsole or otherprovisioning server

    The provisioning server allows for flexibility in installing, upgrading,maintaining, and configuring the Dolby Conference Phone at scale.The provisioning server is typically located at your site and is managed byyour IT group.The Dolby Conference Phone supports FTP, HTTP, and HTTPS forprovisioning; it also supports automatic provisioning server discoverythrough DHCP option 66 and a DNS SRV record.

    Proxy server In certain customer environments, an HTTP proxy server may be requiredto allow network clients to connect to an Internet server.The Dolby Conference Phone supports the HTTP proxy server, which canbe either statically configured or dynamically configured through a ProxyAuto-Configuration (PAC) file.

    1.3 Solution architecture

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 5

  • Figu

    re 1:

    On-

    prem

    ise

    depl

    oym

    ent

    1. P

    Gi d

    eplo

    ys t

    he c

    onfe

    renc

    ing

    app

    on t

    he a

    ppde

    ploy

    men

    t se

    rver

    .3.

    The

    pho

    ne c

    onne

    cts

    to t

    he p

    rovi

    sion

    ing

    serv

    erto

    retr

    ieve

    con

    figu

    rati

    ons

    file

    s.5.

    The

    con

    fere

    ncin

    g ap

    p us

    es H

    TTP

    and

    Web

    Sock

    et t

    o in

    tera

    ct w

    ith

    the

    PGi w

    eb a

    nd c

    all

    cont

    rol s

    ervi

    ces.

    2. C

    onfi

    gura

    tion

    pro

    file

    s on

    Dol

    by C

    onfe

    renc

    ing

    Cons

    ole

    or y

    our p

    rovi

    sion

    ing

    serv

    er e

    nabl

    e th

    eph

    one

    to c

    onne

    ct t

    o th

    e PG

    i inf

    rast

    ruct

    ure.

    4. T

    he p

    hone

    acc

    esse

    s th

    e ap

    p de

    ploy

    men

    t se

    rver

    and

    dow

    nloa

    ds t

    he c

    onfe

    renc

    ing

    app.

    Onc

    e th

    edo

    wnl

    oad

    is c

    ompl

    ete,

    the

    pho

    ne lo

    ads

    the

    conf

    eren

    cing

    app

    .

    6. T

    he re

    spon

    ding

    inst

    ruct

    ions

    from

    the

    PG

    i web

    and

    call

    cont

    rol s

    ervi

    ces

    conn

    ect

    the

    phon

    e to

    the

    infr

    astr

    uctu

    re t

    o jo

    in a

    n au

    dio

    conf

    eren

    ce.

    1.3 Solution architecture

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 6

  • 1.3.1 Provisioning phonesThe easiest way to set up and use Dolby Conference Phones is to use Dolby ConferencingConsole as the provisioning server. We recommend using Dolby Conferencing Console if youhave more than five Dolby Conference Phones to manage.

    Using a provisioning server to configure phones

    A provisioning server allows for flexibility in installing, upgrading, maintaining, andconfiguring the phone. You must have a provisioning server in order to bulk set up andupgrade Dolby Conference Phones.

    You have two choices:

    • Use Dolby Conferencing Console as the provisioning server for phones.

    • Set up an FTP, HTTP, or HTTPS server as the provisioning server for phones.

    You can use Dolby Conferencing Console to provision devices, assemble them into devicepools for ease of management, obtain analytic information about them, and monitor devicestatus on both an individual and group level.

    What is Dolby Conferencing Console?

    Dolby offers Dolby Conferencing Console, a web-based dashboard and management portalpowered by a highly secure and scalable back-end server.

    The Dolby Conferencing Console replaces manual, time-consuming configuration andprovisioning tasks with a streamlined and automated bulk-provisioning process. It alsoprovides real-time operational awareness via detailed device and network analytics andreports, enabling IT to track assets, proactively monitor systems, and remotely diagnose andresolve issues.

    Because the Dolby Conferencing Console acts as a provisioning server, you can avoid thecomplex task of setting up your own provisioning server. In addition, a RESTful applicationprogramming interface (API) and SNMPv2 protocol simplify integration into PGi enterprisenetwork management platforms.

    For more information about setting up and using Dolby Conferencing Console or aprovisioning server to configure phones, see the Dolby Conferencing Console operations andmanagement guide and the Dolby Conference Phone administrator's guide.

    Supported provisioning protocols

    The Dolby Conference Phone supports FTP, HTTP, and HTTPS for provisioning. HTTPS is therecommended protocol, because it provides the best performance and security.

    For more information, see the Dolby Conferencing Console operations and managementguide and the Dolby Conference Phone administrator's guide.

    Configuration parameters

    You must set certain configuration parameters to connect the phone to the app deploymentserver and download the conferencing app.

    For more information, see Setting iMeet configuration parameters on page 25.

    Automatic setup

    The Dolby Conference Phone can automatically discover Dolby Conferencing Console or theprovisioning server on the network using DHCP option 66 or a DNS SRV record. Thissimplifies the deployment of the phone and minimizes configuration errors. To takeadvantage of this feature, you must plan ahead.

    For more information, see the Dolby Conference Phone administrator's guide.

    1.3 Solution architecture

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 7

  • 1.3.2 TLS configurationThe Dolby Conference Phone supports Transport Layer Security (TLS).

    The phone uses HTTPS to download configuration parameters and firmware from DolbyConferencing Console or your provisioning server. It also uses HTTPs to download theconferencing app from the app deployment server.

    The conferencing app communicates with PGi web and call control services using HTTPS orSecure WebSocket.

    In all these scenarios, the phone must be installed with adequate CA certificates to allow forsuccessful TLS negotiation. The phone can load the CA certificate bundle from theprovisioning server using the master configuration file. The Dolby Conferencing Console alsosupports easy-to-use mechanisms.

    Related information

    Configuring CA certificates using Dolby Conferencing Console on page 21Viewing CA certificates on page 23

    1.3.3 iMeet conferencing appThe iMeet conferencing app provides a customized interface for iMeet.

    Configuring the conferencing app is the final step of the deployment process. Once finished,you and your end users are ready to host and join iMeet meetings from the phone.

    Related information

    Configuring iMeet on page 25

    1.3 Solution architecture

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 8

  • 2 Configuration proceduresAfter you configure the Dolby Conference Phone network settings and options, you canactivate the phone with iMeet.

    • Plugging in and setting up the phone automatically• Configuring 802.1x• Opening the phone web interface• Configuring the operation mode• Configuring NTP• Proxy configuration• Specifying VLAN and LAN settings• Configuring the firewall• Setting the phone display name• Setting phones to personal mode• Reserved configuration parameters

    2.1 Plugging in and setting up the phoneautomaticallyEach Dolby Conference Phone requires a wired network connection, preferably supportingPower over Ethernet (PoE). Once your phone is plugged in, many settings may beautomatically detected.

    Procedure

    1. Plug in the phone.

    If the customer network is already set up with either Dynamic Host ConfigurationProtocol (DHCP) option 66 or DNS SRV record, the phone automatically detects thepresence of a Dolby Conferencing Console or provisioning server, which saves you havingto manually enter data.

    If the customer network is not set up, you see this screen:

    2. Select Manual setup, and follow the screen prompts if automatic discovery is notavailable on the customer network.

    2.2 Configuring 802.1xIf your network requires 802.1x authentication, use the touch screen to accept theauthentication server certificate and enter credentials.

    2.1 Plugging in and setting up the phone automatically

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 9

  • About this task

    The network setup wizard detects many of the settings for you, including your virtual LAN(VLAN) and IP network settings. This figure provides an example of a Dolby ConferencePhone having detected those settings upon initial setup.

    If you see this screen, you can configure some 802.1x options, described in this section,directly in the wizard.

    Procedure

    1. If a PKI-based authentication method is selected by the authentication server, you areprompted to review the server certificate information.

    2. Enter the user name and password when the server requires credentials forauthentication. Depending on the authentication server configuration, you may beprompted to enter authentication credentials before you accept the server certificate.

    2.3 Opening the phone web interfaceEnter the phone IP address in your web browser to open the phone web interface.

    Prerequisites

    You must have a network-connected desktop or laptop computer with a web browsersupporting HTML5 installed. (Modern versions of Internet Explorer, Firefox, Chrome, andSafari are supported.)

    The web browser will be used to configure the phone, so it must have IP networkconnectivity to the Dolby Conference Phone.

    2.3 Opening the phone web interface

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 10

  • Procedure

    1. From the phone home screen, tap this sequence:

    > > About > General

    2. Scroll down until you see the IP address.

    3. Enter this URL in the browser address bar:

    https://your phone IP address

    4. Log in to the Dolby Conference Phone using the default credentials:

    • Username = admin

    • Password = 1739

    2.4 Configuring the operation modeYou can configure the Dolby Conference Phone for either Conferencing mode or Dual mode.

    About this task

    Conferencing modeUse if you plan on using your phone with iMeet only.

    Dual mode

    Use if you want to have Internet Protocol (IP) private branch exchange (PBX) integrationwith iMeet.

    If you wish to have IP PBX integration with iMeet, change the configuration mode listedin this table.

    2.4 Configuring the operation mode

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 11

  • Configuration parameter description Configuration parameter name

    Select the operational mode. Features.OperationMode

    Procedure

    1. Go to Settings > Features in the web interface.

    2. Choose a value for Operation Mode.

    In Dual mode, the home screen appears as shown in this figure.

    2.5 Configuring NTPYou must specify servers in the network settings so that the phone displays the correct dateand time.

    Procedure

    1. Click the + to open the network settings parameters.

    2. Click the + to open the NTP section.

    2.5 Configuring NTP

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 12

  • 3. Enter the server addresses provided by your local system administrator.

    2.6 Proxy configurationSome network configurations and phone software require that you specify a proxy server.

    Note: Depending on your network settings and phone software version, this proceduremay not be necessary. For a complete description of this functionality, see the DolbyConference Phone administrator's guide.

    The information listed in this table is required.

    Attributes Description

    Proxy server address IP address.

    Proxy server credentials: User nameand password

    If the proxy server requires devices to authenticate beforebeing allowed access, then a user name and password arerequired.

    Often, the customer network requires clients to go through a proxy server to communicatewith Internet services. The phone supports the HTTP proxy in these scenarios:

    • The phone downloads its configuration and firmware from the provisioning server or theDolby Conferencing Console.

    • The phone downloads the conferencing app from the app deployment server.

    • The conferencing app communicates with the PGi web and call control services usingHTTP, HTTPS, or WebSocket.

    There are two ways to configure the proxy server:

    • Specifying a proxy configuration with a PAC URL on page 14

    • Specifying a conferencing app-specific proxy server on page 15

    2.6 Proxy configuration

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 13

  • 2.6.1 Specifying a proxy configuration with a PAC URLConfigure a PAC URL that instructs the Dolby Conference Phone to automatically discover theproxy settings based on the target URL.

    About this task

    The phone also supports the Web Proxy Auto-Discovery (WPAD) method for locating the PACURL. IT administrators can enable this to trigger automatic proxy discovery in the network.This is the recommended mechanism, as it allows for more flexibility in dynamicallyallocating proxy resources in your network.

    Procedure

    Configure a PAC URL from either Dolby Conferencing Console or the phone web interfaceusing the configuration parameters listed in this table.

    Table 1: Configuration parameters for specifying a proxy configuration with a PAC URLParameter name Setting Task

    Network.Proxy.AutoDiscover

    Set to On.If your network doesnot implementWPAD, leave thisparameter off andmanually set the PACURL usingNetwork.Proxy.PacUrl as described in thenext row.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Network > Proxy, drag Enable WPADto the device configuration.

    3. Switch Network.Proxy.AutoDiscover to ON.

    From the phone web interface:

    1. Navigate to Settings > Network > Proxy.

    2. Switch Enable WPAD to On.

    Network.Proxy.PacUrl

    The phone uses thisURL to to determinethe proxy server tocommunicate withwithin the PGiinfrastructure.IfProxy.AutoDiscoveris on, you do notneed to set thisparameter.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Network > Proxy, drag PACConfiguration URL to the deviceconfiguration.

    3. In the Network.Proxy.PacUrl field, type aURL.

    From the phone web interface:

    1. Navigate to Settings > Network > Proxy.

    2. In the PAC Configuration URL field, type aURL.

    2.6 Proxy configuration

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 14

  • Table 1: Configuration parameters for specifying a proxy configuration with a PAC URL(continued)Parameter name Setting Task

    Network.Proxy.UserName

    Enter the proxyauthentication username.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Network > Proxy, drag Proxy ServerLogin Name to the device configuration.

    3. In the Network.Proxy.UserName field, type aproxy authentication user name.

    From the phone web interface:

    1. Navigate to Settings > Network > Proxy.

    2. In the Proxy Server Login Name field, typea proxy authentication user name.

    Network.Proxy.Password

    Enter the proxyauthenticationpassword.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Network > Proxy, drag Proxy ServerLogin Password to the deviceconfiguration.

    3. In the Network.Proxy.Password field, type aproxy authentication password.

    From the phone web interface:

    1. Navigate to Settings > Network > Proxy.

    2. In the Proxy Server Login Password field,type a proxy authentication password.

    2.6.2 Specifying a conferencing app-specific proxy serverConfigure a conferencing app-specific proxy server using Dvms.Proxy.x configurationparameters.

    About this task

    If both proxy configuration methods are implemented, the Dvms.Proxy.x parameters will beused for conferencing app-related network communications; the PAC file is not utilized.

    For more information on proxy setup, see the Dolby Conference Phone administrator's guide.

    Procedure

    Configure a conferencing app-specific proxy server using the configuration parameterslisted in this table.

    2.6 Proxy configuration

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 15

  • Table 2: Configuration parameters for specifying a conferencing app-specific proxyserverParameter name Setting Task

    Dvms.Proxy.Address A staticallyconfigured proxyserver address,dedicated to theconferencing app.Once configured, thephone goes throughthe specified proxyserver to downloadthe conferencingapp.All networkcommunicationsinitiated from theconferencing app gothrough this proxyserver.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Proxy, drag Proxy Address to the deviceconfiguration.

    3. In the Dvms.Proxy.Address field, type theproxy address.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Proxy.

    2. In the Proxy Address field, type the proxyaddress.

    Dvms.Proxy.Port By default thisparameter is set to8080, it specifiesthe network port forthe proxy server.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Proxy, drag Proxy Port to the deviceconfiguration.

    3. Set Dvms.Proxy.Port by typing in a value orusing the slider to set a value.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Proxy.

    2. Set the Proxy Port by typing in the valueor using the slider to set the value.

    2.6 Proxy configuration

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 16

  • Table 2: Configuration parameters for specifying a conferencing app-specific proxyserver (continued)Parameter name Setting Task

    Dvms.Proxy.UserName Enter the proxyauthentication username.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Proxy, drag Proxy User to the deviceconfiguration.

    3. In the Dvms.Proxy.UserName field, type theproxy authentication user name.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Proxy.

    2. In the Proxy User field, type the proxyauthentication user name.

    Dvms.Proxy.Password Enter the proxyauthenticationpassword.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Proxy, drag Proxy Password to the deviceconfiguration.

    3. In the Dvms.Proxy.Password field, type theproxy password.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Proxy.

    2. In the Proxy Password field, type theproxy password.

    2.7 Specifying VLAN and LAN settingsIf the VLAN and LAN settings are not configured automatically, enter the LAN or VLANinformation in the network settings.

    Prerequisites

    You will need information about the voice and data VLAN settings for your organization. Seethis table for the information that is required.

    2.7 Specifying VLAN and LAN settings

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 17

  • Attributes Description

    Voice and data VLAN. Determine whether there are separate voice and data VLANs.

    Do the LAN switches haveLink Layer Discovery Protocol(LLDP) enabled?

    If your network is configured this way, the phone is placed on thevoice VLAN automatically through LLDP discovery.If you do not want to place your phone on the voice VLAN, youmust disable LLDP.

    Does the Voice VLAN haveaccess to the Internet viathese proxies?

    If no, the phone cannot be placed in the voice VLAN and must beplaced in the data VLAN.

    Note: You may have to disable LLDP to achieve this.

    About this task

    The Dolby Conference Phone supports LLDP or DHCP VLAN autodiscovery. By default, thephone uses LLDP or DHCP to detect voice VLAN. If VLAN is available, the phone places itselfon the voice VLAN.

    Depending on your network settings and phone software version, this procedure may not benecessary. Note that:

    • If your network does not implement voice VLAN and data VLAN segregation, then ignorethis topic and move on.

    • If your network implements voice VLAN, but does not restrict Internet access from thevoice VLAN, then ignore this topic and move on.

    • If you are using Conferencing Only Mode and your voice VLAN restricts Internet access,we recommend using the data VLAN by disabling LLDP VLAN autodiscovery.

    • If you are using Dual Mode, you must use the voice VLAN and allow Internet access fromthe voice VLAN.

    For a complete description of this functionality, including additional VLAN options, see theDolby Conference Phone administrator's guide.

    Procedure

    Configure VLAN and LAN settings using the configuration parameters listed in this table.

    Table 3: Configuration parameters for VLAN and LAN settingsParameter name Setting Task

    Network.Services.LLDPEnabled

    Set to On if yourVLAN settings areconfigured to bediscoverable.

    This parameter cannot be set from DolbyConferencing Console.From the phone web interface:

    1. Navigate to Network > Services.

    2. Switch Enable LLDP to On if your VLANsettings are configured to be discoverable.

    2.8 Configuring the firewallAll Dolby Voice clients, including the Dolby Conference Phone, must connect to the DolbyVoice-enabled back end server through either a direct SIP connection or a SIP connectionover a secure tunnel.

    To ensure that real-time packet traffic can be initiated with the backend server enabled forDolby Voice, see the iMeet deployment guide (created and provided by PGi) for informationabout which firewall ports and outbound destination address (ranges) need to be opened.

    2.8 Configuring the firewall

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 18

  • 2.9 Setting the phone display nameThe display name on the phone will appear in the conference roster when the phone joinsconference calls, so this should be configured to a meaningful name.

    Procedure

    1. Click the + to open the IP PBX Settings > Account section.

    2. Enter the name in the Display Name field.

    2.10 Setting phones to personal modeEnd users can host iMeet meetings from the Dolby Conference Phone in conference roomsthat are shared by many different people, or from a personal office.

    About this task

    As the administrator, you choose the mode of phones. Set the mode for the phone based onwhere the phone is physically located and who will use it.

    Personal mode

    Use this mode for personal phones that are in executive or private offices.

    By default, personal mode is disabled.

    Public mode

    Use this mode for phones that are in conference rooms and are shared by many differentpeople.

    By default, the phone functions in public mode.

    No setup by a host or participants is required.

    Procedure

    Switch the phone from public mode to personal mode from either Dolby ConferencingConsole or the phone web interface:

    2.9 Setting the phone display name

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 19

  • Parameter name Setting Task

    Features.PersonalMode.Enabled

    When personal modeis enabled, hosts cansave their accessnumber and hostpasscode on theDolby ConferencePhone. They canavoid reenteringinformation eachtime they host ameeting.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Features > Personal Mode, drag Setphone for personal use to the deviceconfiguration.

    3. Switch Features.PersonalMode.Enabledto ON.

    From the phone web interface:

    1. Navigate to Features > Personal Mode.

    2. Switch Set phone for personal use to On.

    2.11 Reserved configuration parametersCertain configurations parameters are utilized by the iMeet app and should not be includedin any provisioning server configuration.

    Do not use these configurations parameters:

    • Dvms.Custom.Parameter1

    • Dvms.Custom.Parameter2

    • Dvms.Custom.SecureParameter1

    For more information, see Utility functions on page 29.

    2.11 Reserved configuration parameters

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 20

  • 3 Adding CA certificates required foriMeetCertain CA certificates are required to establish a secure connection between the DolbyConference Phone and iMeet.

    • Downloading CA certificates• Configuring CA certificates using Dolby Conferencing Console• Configuring CA certificates using your provisioning server• Configuring CA certificates using the phone web interface• Viewing CA certificates

    3.1 Downloading CA certificatesThe CA certificates required for iMeet are hosted on the Internet by a certificate provider.

    Procedure

    1. Go to https://www.digicert.com/digicert-root-certificates.htm and then download thiscertificate:

    Root certificate:

    • DigiCert Global Root CA

    2. Go to https://certs.secureserver.net/repository/, expand the Starfield certificate chainsection, and then download this certificate:

    • Starfield Class 2 Certification Authority Root Certificate

    What to do next

    Upload the certificates to your provisioning server and then configure the certificates to beavailable to the Dolby Conference Phone.

    3.2 Configuring CA certificates using DolbyConferencing ConsoleOnce you have the CA certificate, you can upload it and configure Dolby Conference Phonesto use it using Dolby Conferencing Console. You can then use Dolby Conferencing Console toadd the CA certificate to many phones at one time.

    Procedure

    1. Download the CA certificates to your computer (see Downloading CA certificates on page21).

    2. Upload the CA certificate to Dolby Conferencing Console.

    a) From the Dolby Conferencing Console home screen, click the system settings button inthe upper-right corner.

    The System Information screen displays.

    3.1 Downloading CA certificates

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 21

    https://www.digicert.com/digicert-root-certificates.htmhttps://certs.secureserver.net/repository/

  • b) Click the settings button on the left-side of the screen, and then click CA certificates.

    A list of CA certificates in Dolby Conferencing Console displays.

    c) Click the plus button, and then follow the on-screen instructions to upload the CAcertificate.

    3. Add the certificate to the desired device pool.

    a) From the Dolby Conferencing Console home screen, click on the name of the devicepool.

    b) Click the settings button on the left-side of the screen, and then click CA certificates.

    c) Select the new CA certificate that you added.

    d) Click ✔ to confirm.

    4. Reboot all of the phones in the device pool.

    a) From the Dolby Conferencing Console home screen, click the name of the pool.

    b) Select all devices in the pool, and click the reboot button.

    Results

    Dolby Conferencing Console uploads the CA certificates to the phone.

    Related information

    TLS configuration on page 8

    3.3 Configuring CA certificates using yourprovisioning serverIf you are using a provisioning server instead of Dolby Conferencing Console, you still need toupload the CA certificates to the provisioning server. You can then use the provisioningserver to add the CA certificates to phones.

    Procedure

    1. Download the CA certificates to your computer (see Downloading CA certificates on page21).

    2. Download the .crt files to your provisioning server.

    3. Add the file names of the CA certificates to the master configuration file on DolbyConferencing Console or your provisioning server.

    For example:

    { "img_file" : "dvcp-1.0.0.1234.tar.gz", "cfg_files" : [

    3.3 Configuring CA certificates using your provisioning server

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 22

  • "dvcp-config1.json" ], "certificates": [ "DigiCertGlobalRootCA.crt", "sf-class2-root.crt" ]}

    4. Reboot the phone.

    Results

    The phone downloads the CA certificates from the provisioning server.

    3.4 Configuring CA certificates using the phone webinterfaceIf desired, you can add CA certificates to the Dolby Conference Phone using the web interfaceinstead of using Dolby Conferencing Console or your provisioning server.

    Procedure

    1. Download the CA certificates to your computer (see Downloading CA certificates on page21).

    2. From the web interface, click the Tools tab.

    3. Click Certificates.

    4. Click Import CA certificates.

    A standard file selection dialog box displays. Individually select the CA certificates thatyou have already downloaded and upload them to the phone.

    Results

    The CA certificates are uploaded to the phone.

    3.5 Viewing CA certificatesYou can view the basics of certificate authority stored on the Dolby Conference Phone.

    3.4 Configuring CA certificates using the phone web interface

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 23

  • About this taskAll certificates are validated every time the certificate store changes, as well as every 24hours if scheduled provisioning is enabled. If a certificate is set to expire within seven days,the Expiring soon count increases on the CA certificates status screen.

    You must replace the certificate before expiry, or certain features will stop working on thephone. If a certificate expires, the Expired count increases on the CA certificates status page.Warnings and error messages are available from the phone web interface.

    Figure 2: Errors and warnings on CA certificates status screens

    Procedure

    1. To view CA certificates from the phone user interface:

    a) Tap this sequence:

    > > About > Status > CA Certificates

    2. To view CA certificates from the phone web interface:

    a) From the Status tab, click Device.

    b) Next to CA Certificate Details, click the Click for more details link.

    Related information

    TLS configuration on page 8

    3.5 Viewing CA certificates

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 24

  • 4 Configuring iMeetAfter the phone is connected to the network and either Dolby Conferencing Console or yourprovisioning server, and the required CA certificates are installed, you are ready to configureiMeet.

    • Setting iMeet configuration parameters• Known issue with v3.0.0 and 3.0.1 firmware• Utility functions

    4.1 Setting iMeet configuration parametersThe phone does not connect to iMeet by default. You must configure the phone toautomatically connect to iMeet.

    About this task

    We recommend that you use Dolby Conferencing Console to manage your devices, but theinformation in this topic applies when using a provisioning server or the phone webinterface.

    Procedure

    1. Ensure that the required PGi certificates are installed on the Dolby Conference Phone (see Adding CA certificates required for iMeet on page 21).

    2. Add these configuration parameters to the device configuration with these settings:

    4.1 Setting iMeet configuration parameters

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 25

  • Table 4: Configuration parameters required for iMeetParameter name Setting Task

    Dvms.Server.Address Enter the address ordomain of the DolbyVoice web serverwith your iMeetconferencingapplication files. Thephone will downloadthe files from thislocation (forexample, https://dcp-download.pgibob.com/imeet-app/).

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Server, drag Dolby Voice ConferencingServer Address to the deviceconfiguration.

    3. In the Dvms.Server.Address field, type theURL.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Server.

    2. In the Dolby Voice Conferencing ServerAddress field, type the URL.

    Dvms.Service.Logo Set this parameterto Disabled.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Service, drag Logo to the deviceconfiguration.

    3. In the Dvms.Service.Logo drop-down list,select Disabled.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Service.

    2. In the Logo drop-down list, selectDisabled.

    4.1 Setting iMeet configuration parameters

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 26

    https://dcp-download.pgibob.com/imeet-app/https://dcp-download.pgibob.com/imeet-app/https://dcp-download.pgibob.com/imeet-app/https://dcp-download.pgibob.com/imeet-app/

  • Table 4: Configuration parameters required for iMeet (continued)Parameter name Setting Task

    Dvms.Service.Name Set the Dolby Voiceconferencing servicename that willappear on the homescreen of the device.Set this parameterto iMeet.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Service, drag Name to the deviceconfiguration.

    3. In the Dvms.Service.Name field, typeiMeet.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Service.

    2. In the Name field, type iMeet.

    Dvms.Service.Provider

    Select a serviceprovider from thelist. Set thisparameter toCustom.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Service, drag Service provider to thedevice configuration.

    3. In the Dvms.Service.Provider drop-downlist, select Custom.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Service.

    2. In the Service provider drop-down list,select Custom.

    4.1 Setting iMeet configuration parameters

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 27

  • Table 4: Configuration parameters required for iMeet (continued)Parameter name Setting Task

    Dvms.Service.Type Select theconferencing serviceprovider applicationtype. Set thisparameter to App.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Dolby Voice Conferencing Service >Service, drag Application type to thedevice configuration.

    3. In the Dvms.Service.Type field, select App.

    From the phone web interface:

    1. Navigate to Settings > Dolby VoiceConferencing Service > Service.

    2. In the Application type field, select App.

    Features.OperationMode

    Set this parameterto ConferencingOnly Mode or DualMode. For moreinformation aboutthe differences inthese operationsmodes, see Configuring theoperation mode onpage 11.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From Features, drag Operation Mode tothe device configuration.

    3. In the Features.OperationMode field,select Conferencing Only Mode or DualMode.

    From the phone web interface:

    1. Navigate to Settings > Features.

    2. In the Operation Mode drop-down list,select Conferencing Only Mode or DualMode.

    Results

    You are ready to start hosting and joining iMeet meetings from the phone. For moreinformation, see Dolby Conference Phone 3.0 user's guide for iMeet.

    Note: If you are using version 3.0.0 or 3.0.1 firmware, see Known issue with v3.0.0 and3.0.1 firmware on page 28. Some additional steps are still required.

    4.2 Known issue with v3.0.0 and 3.0.1 firmwareThere is a known firmware issue in version 3.0.0 and 3.0.1 of the Dolby Conference Phonethat causes iMeet meetings to fail to start.

    In this situation, after the phone reboots, the first iMeet calls fails. A Connecting to User'smeeting message displays, the LED halo turns blue, and then a time-out error displayssaying the call cannot be completed. After three calls, all subsequent calls work normally.

    To workaround this issue, change the configuration parameters as listed in this table.

    4.2 Known issue with v3.0.0 and 3.0.1 firmware

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 28

  • Table 5: Configuration parameters required for workaroundParameter name Setting Task

    Sip.Pbx.OnlyAcceptCallServerEvents

    Set this parameter tooff (or false).

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From IP PBX Settings > Server, drag Onlyaccept call server SIP events to the deviceconfiguration.

    3. Switch Sip.Pbx.OnlyAcceptCallServerEventsto OFF.

    From the phone web interface:

    1. Navigate to Settings > IP PBX Settings >Server.

    2. Switch Only accept call server SIP events toOff.

    Sip.Pbx.Domain If the phone is set toConferencing OnlyMode, then you mustenter a value, but itcan be anything.

    From Dolby Conferencing Console:

    1. From Dolby Conferencing Console, select adevice and then click the Edit deviceconfiguration button.

    2. From IP PBX Settings > Server, drag SIPDomain Name to the device configuration.

    3. In the SIP Domain Name field, enter anydomain name.

    From the phone web interface:

    1. Navigate to Settings > IP PBX Settings >Server.

    2. In the SIP Domain Name field, enter anydomain name.

    4.3 Utility functionsThe iMeet app uses certain configuration parameters for local storage on the DolbyConference Phone.

    As explained in Reserved configuration parameters on page 20, you should never provisionthese configuration parameters. However, you can use them to perform certain utilityfunctions by manually clearing them from the phone web interface.

    Dvms.Custom.Parameter1Clears the recent calls list.

    Dvms.Custom.Parameter2Clears all iMeet app internal storage.

    Dvms.Custom.SecureParameter1Resets the iMeet app to its initial state.

    4.3 Utility functions

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 29

  • 5 TroubleshootingIf you encounter an issue with the Dolby Conference Phone, we recommend that youattempt basic troubleshooting before you contact Support.

    • Error messages• Viewing information about the iMeet conferencing app• Support contacts

    5.1 Error messagesError messages describe the causes and possible solutions to problems.

    Table 6: Issue typesIssue type Action

    Network issue Check your network configuration, and confirm thatthe phone can connect the PGi infrastructure.

    Certificate issue Refer to Adding CA certificates required for iMeet onpage 21.

    Invalid input issue Check meeting details (URL, dial in host passcode,access number) in the iMeet desktop application.

    Table 7: Error messagesError message More information Issue type

    Meeting not found

    The meeting could not befound. Verify that thecontact has the correctmeeting URL.

    The user provided a meeting URL thatdoes not have an iMeet meetingassociated with it.

    Invalid input

    The meeting could not befound. Verify that the accessnumber and host dial inpasscode are still valid.

    The user provided an invalid accessnumber and host dial-in passcodecombination.

    Invalid input

    Incorrect host dial in passcode

    The host dial in passcode isincorrect. Verify the meetinginformation.

    The user provided an incorrect hostdial-in passcode.

    Invalid input

    Cannot start meeting

    The meeting could not bestarted. Contact your ITadministrator regarding thisissue.

    There was a problem establishing aconnection with the conference service.

    Invalid input

    Unable to connect to themeeting. The connection toconference service timed out.

    While looking up the meetinginformation, the connection to theconference service timed out. Try again.If the problem persists, there is likely aproblem with the networking setup orconditions.

    Network

    Cannot join meeting

    5.1 Error messages

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 30

  • Table 7: Error messages (continued)Error message More information Issue type

    Unable to connect to themeeting. The connection toconference service timed out.

    While looking up the meetinginformation, the connection to theconference service timed out. Try again.If the problem persists, there is likely aproblem with the networking setup orconditions.

    Network

    Leaving meeting issue

    There was an issue leavingthe meeting. Contact your ITadministrator regarding thisissue.

    There was a problem closing theconnection with the conference service.This usually has no ill effect, but if theproblem persists, it can indicate anincorrect networking setup orconditions.

    Network

    Meeting connection issue

    There was an issue mutingyour phone. Try again.Contact your IT administratorif this issue persists.

    There was an issue reporting the phonemute status to the conference service.Trying again will probably correct theissue. If the problem persists, it canindicate a problem with the networkingsetup or conditions.

    Network

    The meeting connection waslost. Try joining again.Contact your IT administratorregarding this issue.

    There was an unrecoverable issue withthe connection to the conferenceservice. Issue should be reported to PGisupport team.

    Network

    There was an issue connectingto the meeting. Contact yourIT administrator if thisissue persists.

    There was an issue communicatingmeeting changes to the conferenceservice. Trying again will probablycorrect the issue. If the problempersists, it can indicate a problem withthe networking setup or conditions.

    Network

    Connection timeout

    There was an issue with themeeting connection. Themeeting information may notbe updated. Contact your ITadministrator if this issuepersists.

    The phone is only partially connected tothe conference service, so the meetinginformation may not be updated.Restarting the call should address theconnectivity issue. If the problempersists, there is likely a problem withthe networking setup or conditions.

    Network

    There was an issue muting allparticipants. Try again.Contact your IT administratorif this issue persists.

    There was an issue requesting that allparticipants be muted by theconference service. Trying again willprobably correct the issue. If theproblem persists, it can indicate aproblem with the networking setup orconditions.

    Network

    Certificate configuration issue

    5.1 Error messages

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 31

  • Table 7: Error messages (continued)Error message More information Issue type

    The conference servicerejected the conference phonecertificate. Contact your ITadministrator regarding thisissue.

    The PGi conference service rejected thephone certificate. Issue should bereported to the PGi support team.

    Certificate

    The conference service CAcertificates are notinstalled on the conferencephone. Contact your ITadministrator regarding thisissue.

    The PGi conference service CAcertificates are not installed on thephone.

    Certificate

    5.2 Viewing information about the iMeetconferencing appYou can view information about the iMeet conferencing app, such as the version number ofthe conferencing app or the loading status.

    Procedure

    1. From the phone user interface, tap this sequence:

    > > About > Status

    2. Scroll down, and then tap Conferencing app.

    5.3 Support contactsIf you have a problem, we recommend that you review this document and the relateddocumentation. If you cannot troubleshoot the problem on your own, contact PGi forsupport.

    For additional information and support:

    • Visit the iMeet Community (if included with your account).

    • View video tutorials.

    • Get the latest User Guides and Release Notes.

    You can also send an email directly to iMeet Care:

    North America: [email protected]: [email protected] Pacific: [email protected]: [email protected]

    5.2 Viewing information about the iMeet conferencing app

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 32

    https://www.mymeetinghelp.com/Home/iMeet/iMeet_Web/Videoshttps://www.mymeetinghelp.com/Home/iMeet/iMeet_Web/Videoshttps://www.mymeetinghelp.com/Home/iMeet

  • GlossaryDHCP

    Dynamic Host Configuration Protocol.

    DNSDomain Name System. An Internet service that translates Internet domain and hostnames to IP addresses and conversely. DNS automatically converts between the nameentered in a web browser and the IP addresses of the web server hosting the site whoseURL is entered in the web browser.

    IPInternet Protocol.

    LDAPLightweight Directory Access Protocol. An application protocol for querying or modifyingitems in corporate directories that allows sharing of information about users, devices,and applications on a network.

    LLDPLink Layer Discovery Protocol . A vendor-neutral link layer protocol for Ethernet networkdevices such as switches, routers, and wireless LAN access points to announceinformation about themselves to other nodes on the network and store the informationthey discover, as defined in IEEE 802.1AB.

    PACProxy automatic configuration. A file that defines how web browsers and other useragents can automatically choose the appropriate proxy server (access method) forfetching a given URL.

    PBXPrivate branch exchange. A phone system that is delivered as a hosted service.

    PoEPower over Ethernet. A solution in which an electrical current is run to networkinghardware over Ethernet category 5 or higher data cabling.

    VLANVirtual LAN. Any broadcast domain that is partitioned and isolated in a computernetwork at the data link layer (OSI layer 2).

    WPADWeb Proxy Automatic Discovery. An Internet protocol that enables a web browser toautomatically connect to a cache server (or proxy server) location in a network to retrievestored web pages more quickly by than leaving the network to request the web pagefrom the site of the originating web server.

    Dolby Conference Phone 3.0 configuration guide for iMeet

    27 July 2016 33

    Contents1 Introduction1.1 About this guide1.2 Related documentation1.3 Solution architecture1.3.1 Provisioning phones1.3.2 TLS configuration1.3.3 iMeet conferencing app

    2 Configuration procedures2.1 Plugging in and setting up the phone automatically2.2 Configuring 802.1x2.3 Opening the phone web interface2.4 Configuring the operation mode2.5 Configuring NTP2.6 Proxy configuration2.6.1 Specifying a proxy configuration with a PAC URL2.6.2 Specifying a conferencing app-specific proxy server

    2.7 Specifying VLAN and LAN settings2.8 Configuring the firewall2.9 Setting the phone display name2.10 Setting phones to personal mode2.11 Reserved configuration parameters

    3 Adding CA certificates required for iMeet3.1 Downloading CA certificates3.2 Configuring CA certificates using Dolby Conferencing Console3.3 Configuring CA certificates using your provisioning server3.4 Configuring CA certificates using the phone web interface3.5 Viewing CA certificates

    4 Configuring iMeet4.1 Setting iMeet configuration parameters4.2 Known issue with v3.0.0 and 3.0.1 firmware4.3 Utility functions

    5 Troubleshooting5.1 Error messages5.2 Viewing information about the iMeet conferencing app5.3 Support contacts

    Glossary