Yealink VC400 Service manual

Administrator’s Guide for Yealink Video Conferencing Systems
Copyright
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Administrator’s Guide for Yealink Video Conferencing Systems

About This Guide
v
About This Guide
The VC400/VC120 video conferencing system represents a new generation of full
high-definition video conferencing launched by Yealink. It features, in addition to a
high-definition audio-visual experience, flexible compatibility, easy deployment and intelligent
network adaptation. With high product standards, it is an ideal choice for SMEs. The
VC400/VC120 video conferencing system allows branch offices, as well as branch and head
offices, to communicate flexibly and cooperate efficiently.
The guide is intended for administrators who need to configure, customize, manage, and
troubleshoot the video conferencing system properly, rather than for end-users. It provides
details on the functionality and configuration of the Yealink video conferencing system.
Many of the features described in this guide involve network and account settings, which could
affect the system’s performance in the network. Therefore, an understanding of IP networking
and a prior knowledge of VoIP telephony concepts are necessary.
See the Yealink Products Regulatory Notices Guide for all regulatory and safety guidance.
Documentations
This guide covers the VC400/VC120 video conferencing system. In addition to the administrator
guide, the following related documentations are available:
Quick Start Guide, which describes how to assemble the system and configure basic
network features on the system.
User Guides, which describe how to configure and use basic features available on the
systems.
Video Conference Room Deployment Solution, which describes the conference room
layout requirements and how to deploy the systems.
Network Deployment Solution, which describes how to deploy network for your systems.
You can download the above documentations from Yealink website:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage
For support or service, please contact your Yealink reseller or go to Yealink Technical Support
online: http://www.yealink.com/Support.aspx .
Firmware
Common reasons for updating firmware include fixing bugs or adding features to the device.
You can download the latest firmware for your product online:
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage

Administrator’s Guide for Yealink Video Conferencing Systems
vi
For more information on how to upgrade the system firmware, refer to Upgrading System
Firmware on page 269.
In This Guide
This administrator guide includes the following chapters:
Chapter 1, “System Overview” describes system components, icons and Indicator LEDs.
Chapter 2, “Getting Started” describes how to install and start up the system and
configuration methods.
Chapter 3, “Configuring Network”describes how to configure network features on the
system.
Chapter 4, “Configuring Call Preferences” describes how to configure call preferences on
the system.
Chapter 5, “Configuring System Settings” describes how to configure basic, audio and
video features on the system.
Chapter 6, “System Management” describes how to manage system contacts and call
history.
Chapter 7, “Configuring Security Features” describes how to configure security features on
the system.
Chapter 8, “System Maintenance” describes how to upgrade system firmware and reset the
system.
Chapter 9, “Troubleshooting” describes how to troubleshoot the system and provides
some common troubleshooting solutions.
Typographic Conventions
Yealink documentations contain a few typographic conventions.
You need to know the following basic typographic conventions to distinguish types of in-text
information:
Convention
Description
Bold
Highlights the web/phone user interface items such as menus, menu
selections, soft keys, or directory names when they are involved in a
procedure or user action (e.g., Click on Setting ->General).
Also used to emphasize text
Blue Text
Used for cross references to other sections within this documentation
(e.g., refer to Troubleshooting).

About This Guide
vii
Convention
Description
Blue Text in
Italics
Used for hyperlinks to Yealink resources outside of this documentation
such as the Yealink documentations (e.g.,
For more information, refer to Yealink VC400 Video Conferencing
System User Guide .
You also need to know the following writing conventions to distinguish conditional information:
Convention
Description
->
Indicates that you need to select an item from a menu. For example,
Settings->Basic Settings indicates that you need to select Basic
Settings from the Settings menu.
Terms
As you read this guide, you’ll notice that the same terms are used repeatedly. Make sure you
familiarize yourself with these terms.
Cloud platform: This term refers to Yealink VC Cloud Management Service (Yealink Cloud),
Yealink Meeting Server, Zoom, BlueJeans, Pexip, Mind and Custom platform.
Cloud account: This term refers to Yealink Cloud, YMS, BlueJeans, Pexip, Mind and Custom
account.
Cloud systems: This term refers to the systems that support Cloud feature, including SIP
VP-T49G IP phone, VC desktop and VC110/VC120/VC400/VC500/VC800 video conferencing
system.
Cloud contacts: This term refers to Yealink Cloud contacts and YMS contacts.
Summary of Changes
This section describes the changes to this guide for each release and guide version.
Changes for Release 23, Guide Version 23.20
The following section is new for this version:
Virtual Remote Control on page 165
Public Mode on page 162
Hiding Menu Logo on page 178
Multiple Preset on page 206
Major updates have occurred to the following sections:
Configuring Video Conference Platform on page 99

Administrator’s Guide for Yealink Video Conferencing Systems
viii
Appendix B: Trusted Certificates on page 298
Changes for Release 23, Guide Version 23.6
The following section is new for this version:
Registering a YMS Account on page 104
Logging out of the Cloud Platform on page 122
Sharing Content on page 157
Using the API with a LAN Connection on page 244
Using the API with a Serial Connection on page 245
Major updates have occurred to the following sections:
Intelligent Firewall Traversal on page 90
Default Layout on page 161
Changes for Release 22, Guide Version 22.15
The following section is new for this version:
Logging into the StarLeaf Cloud Platform on page 106
Major updates have occurred to the following sections:
H.323 Tunneling on page 73
Enabling H.460 Support for H.323 Calls on page 135
Methods of Transmitting DTMF Digit on page 138
Dual-Stream Protocol on page 196
Camera Control Protocol on page 212
H.235 on page 263
Changes for Release 22, Guide Version 22.5
The following sections are new for this version:
Virtual Remote Control on page 165
Auto Dialout Mute on page 152
Meeting Blacklist on page 187
USB Configuration on page 218
Upgrading VCC20 Camera Firmware on page 270

About This Guide
ix
Major updates have occurred to the following sections:
Icon Instructions on page 25
Configuring Video Conference Platformon page 99
DTMF on page 137
Dual-Stream Protocol on page 196
Camera Control Protocol on page 212
Secure Real-Time Transport Protocol on page 259
Changes for Release 21, Guide Version 21.20
The following sections are new for this version:
Keyboard Input Method on page 188
Configuring Video Conference Platform on page 99
Major updates have occurred to the following sections:
Icon Instructions on page 25
Setup Wizard on page 41
Directory on page 227
Changes for Release 21, Guide Version 21.15
The following section is new for this edition:
IPv6 Support on page 56
Hiding Icons in a Call on page 179
Output Resolution on page 217
Video Recording on page 219
Screenshot on page 221
VCS Integrated with Control Systems on page 243
Major updates have occurred to the following sections:
Packaging Contents on page 3
System Component Instructions on page 10
Configuring LAN Properties on page 48
Search Source List in Dialing on page 239
8-Way MCU License on page 242

Administrator’s Guide for Yealink Video Conferencing Systems
x
Changes for Release 20, Guide Version 20.6
The following sections are new for this version:
Firmware on page v
Physical Features on page 2
VCM30 Video Conferencing Microphone Array on page 20
Remote Control Battery Safety Information on page 39
Static DNS on page 50
STUN on page 84
Rport on page 88
DTMF on page 137
Video Codecs on page 145
Ringback Timeout on page 158
Auto Refuse Timeout on page 159
SIP IP Call by Proxy on page 159
Meeting Password on page 184
Meeting Whitelist on page 186
License on page 241
Major updates have occurred to the following sections:
Packaging Contents on page 3
VCC18/VCC20 HD Camera on page 12
VCR10 Remote Control on page 23
LED Instructions on page 28
System Installation on page 33
VLAN on page 61
Configuring the System for Use with a Firewall or NAT on page 77
Enabling H.460 Support for H.323 Calls on page 135
on page
Audio Setting on page 189
Dual-Stream Protocol on page 196
Camera Control Protocol on page 212
H.235 on page 263
Capturing Packets on page 280

Table of Contents
xi
Table of Contents
About This Guide ........................................................................... v
Documentations ......................................................................................................................................................................... v
Firmware ........................................................................................................................................................................................ v
In This Guide ............................................................................................................................................................................... vi
Typographic Conventions......................................................................................................................................................vi
Terms.............................................................................................................................................................................................vii
Summary of Changes .............................................................................................................................................................vii
Changes for Release 23, Guide Version 23.15....................................................................................................vii
Changes for Release 23, Guide Version 23.6 .....................................................................................................viii
Changes for Release 22, Guide Version 22.15...................................................................................................viii
Changes for Release 22, Guide Version 22.5 .....................................................................................................viii
Changes for Release 21, Guide Version 21.20..................................................................................................... ix
Changes for Release 21, Guide Version 21.15..................................................................................................... ix
Changes for Release 20, Guide Version 20.6 ........................................................................................................ x
Table of Contents..........................................................................xi
System Overview............................................................................1
VoIP Principles.............................................................................................................................................................................1
Physical Features ........................................................................................................................................................................2
Packaging Contents ..................................................................................................................................................................3
VC400 Packaging Contents ..........................................................................................................................................3
VC120 Packaging Contents ..........................................................................................................................................6
System Component Instructions ...................................................................................................................................... 10
VC400/VC120 Codec.................................................................................................................................................... 10
VCC18/VCC20 HD Camera......................................................................................................................................... 12
Video Conferencing Phone........................................................................................................................................ 14
CPE80 Expansion Microphone ................................................................................................................................. 19
VCM30 Video Conferencing Microphone Array............................................................................................... 20
VCR10 Remote Control ............................................................................................................................................... 23
Icon Instructions ...................................................................................................................................................................... 25
Icons on Display Device .............................................................................................................................................. 25
Icons on the Video Conferencing Phone............................................................................................................. 27
LED Instructions ....................................................................................................................................................................... 28
User Interfaces.......................................................................................................................................................................... 30
Web User Interface ....................................................................................................................................................... 30
Remote Control .............................................................................................................................................................. 31

Administrator’s Guide for Yealink Video Conferencing Systems
xii
Getting Started.............................................................................33
System Installation.................................................................................................................................................................. 33
Installing the VC400 Video Conferencing System ........................................................................................... 34
Installing the VC120 Video Conferencing System ........................................................................................... 34
Installing the Camera ................................................................................................................................................... 36
Installing Batteries in the Remote Control.......................................................................................................... 38
Powering the System On and Off..................................................................................................................................... 39
System Initialization ............................................................................................................................................................... 39
System Startup ......................................................................................................................................................................... 40
Setup Wizard............................................................................................................................................................................. 41
Enabling Communication with Other Systems........................................................................................................... 45
Placing a Test Call from VCS .............................................................................................................................................. 46
Configuring Network...................................................................47
Preparing the Network ......................................................................................................................................................... 47
Configuring LAN Properties ............................................................................................................................................... 48
DHCP................................................................................................................................................................................... 48
Configuring Network Settings Manually ............................................................................................................. 52
IPv6 Support .................................................................................................................................................................... 56
Configuring Network Speed and Duplex Mode ........................................................................................................ 60
VLAN............................................................................................................................................................................................. 61
LLDP..................................................................................................................................................................................... 62
Manual Configuration for VLAN.............................................................................................................................. 65
DHCP VLAN...................................................................................................................................................................... 67
802.1X Authentication........................................................................................................................................................... 68
H.323 Tunneling....................................................................................................................................................................... 73
Configuring the System for Use with a Firewall or NAT ......................................................................................... 77
Call Setup and Media Ports....................................................................................................................................... 77
Restricting Reserved Ports......................................................................................................................................... 78
Network Address Translation ................................................................................................................................... 81
Intelligent Firewall Traversal ............................................................................................................................................... 90
Quality of Service .................................................................................................................................................................... 91
VPN ............................................................................................................................................................................................... 94
Configuring Call Preferences ......................................................99
Configuring Video Conference Platform....................................................................................................................... 99
Logging into the Yealink VC Cloud Management Service Platform ......................................................100
Registering a YMS Account.....................................................................................................................................104
Logging into the StarLeaf Cloud Platform ........................................................................................................106
Logging into the Zoom Cloud Platform.............................................................................................................108
Registering a Pexip Account ...................................................................................................................................111

Table of Contents
xiii
Logging into the BlueJeans Cloud Platform.....................................................................................................114
Logging into the Mind Platform............................................................................................................................116
Registering a Custom Account ..............................................................................................................................119
Logging out of the Cloud Platform......................................................................................................................122
Configuring the Third-party Virtual Meeting Room .....................................................................................122
Configuring SIP Settings ....................................................................................................................................................126
SIP Account ....................................................................................................................................................................126
SIP IP Call.........................................................................................................................................................................128
Configuring H.323 Settings...............................................................................................................................................130
Enabling H.460 Support for H.323 Calls.............................................................................................................135
DTMF..........................................................................................................................................................................................137
Methods of Transmitting DTMF Digit.................................................................................................................138
Codecs .......................................................................................................................................................................................143
Audio Codecs ................................................................................................................................................................143
Video Codecs.................................................................................................................................................................145
Call Protocol............................................................................................................................................................................146
Account Polling......................................................................................................................................................................148
Do Not Disturb.......................................................................................................................................................................150
Auto Answer............................................................................................................................................................................151
Auto Dialout Mute................................................................................................................................................................152
Call Match ................................................................................................................................................................................153
History Record........................................................................................................................................................................154
Bandwidth ................................................................................................................................................................................155
Sharing Content.....................................................................................................................................................................157
Ringback Timeout.................................................................................................................................................................158
Auto Refuse Timeout...........................................................................................................................................................159
SIP IP Call by Proxy...............................................................................................................................................................159
Default Layout ........................................................................................................................................................................161
Public Mode ............................................................................................................................................................................162
Configuring System Settings ....................................................165
General Setting ......................................................................................................................................................................165
Virtual Remote Control .............................................................................................................................................165
Configuring Remote Control ..................................................................................................................................166
Site Name........................................................................................................................................................................167
Backlight of the Video Conferencing Phone....................................................................................................168
Language.........................................................................................................................................................................169
Date & Time...................................................................................................................................................................170
Automatic Sleep Time................................................................................................................................................176
Hiding IP Address ........................................................................................................................................................177
Hiding Menu Logo ......................................................................................................................................................178
Hiding Icons in a Call .................................................................................................................................................179
Relog Offtime................................................................................................................................................................183
Key Tone..........................................................................................................................................................................183

Administrator’s Guide for Yealink Video Conferencing Systems
xiv
Meeting Password.......................................................................................................................................................184
Meeting Whitelist ........................................................................................................................................................186
Meeting Blacklist..........................................................................................................................................................187
Keyboard Input Method ...........................................................................................................................................188
Audio Setting..........................................................................................................................................................................189
Audio Output Device..................................................................................................................................................189
Audio Input Device .....................................................................................................................................................191
Adjusting MTU of Video Packets....................................................................................................................................194
Dual-Stream Protocol..........................................................................................................................................................196
Mix Sending.............................................................................................................................................................................200
Configuring Camera Settings...........................................................................................................................................201
Multiple Preset..............................................................................................................................................................206
Far-end Camera Control ....................................................................................................................................................211
Camera Control Protocol ...................................................................................................................................................212
Output Resolution ................................................................................................................................................................217
USB Configuration ................................................................................................................................................................218
Video Recording....................................................................................................................................................................219
Screenshot ...............................................................................................................................................................................221
Tones..........................................................................................................................................................................................222
System Management.................................................................227
Directory ...................................................................................................................................................................................227
LDAP ...........................................................................................................................................................................................232
Call History...............................................................................................................................................................................237
Search Source List in Dialing ............................................................................................................................................239
Dual Screen..............................................................................................................................................................................239
Two-way Video Calls ..................................................................................................................................................240
Two-way Video Call with Presentation...............................................................................................................240
Multi-way Video Calls ................................................................................................................................................240
Multi-way Video Call with Presentation.............................................................................................................241
License .......................................................................................................................................................................................241
Device Type License....................................................................................................................................................241
8-Way MCU License....................................................................................................................................................242
VCS Integrated with Control Systems ..........................................................................................................................243
Using the API with a LAN Connection ................................................................................................................244
Using the API with a Serial Connection..............................................................................................................245
Configuring Security Features ..................................................247
User Mode................................................................................................................................................................................247
Administrator Password .....................................................................................................................................................248
Web Server Type ...................................................................................................................................................................249
Transport Layer Security.....................................................................................................................................................251
Secure Real-Time Transport Protocol...........................................................................................................................259

Table of Contents
xv
H.235 ..........................................................................................................................................................................................263
Defending against Attacks ................................................................................................................................................265
Abnormal Call Answering.........................................................................................................................................265
Configuring Safe Mode Call....................................................................................................................................266
System Maintenance..................................................................269
Upgrading System Firmware............................................................................................................................................269
Upgrading VCC20 Camera Firmware............................................................................................................................270
Importing/Exporting Configuration ..............................................................................................................................270
Resetting to Factory.............................................................................................................................................................271
SNMP .........................................................................................................................................................................................273
Troubleshooting.........................................................................277
Troubleshooting Methods ................................................................................................................................................277
Viewing Log Files .........................................................................................................................................................277
Capturing Packets........................................................................................................................................................280
Getting Information from Status Indicators .....................................................................................................283
Analyzing Configuration Files.................................................................................................................................284
Viewing Call Statistics ................................................................................................................................................284
Using Diagnostic Methods ......................................................................................................................................284
Troubleshooting Solutions................................................................................................................................................286
General Issues ...............................................................................................................................................................286
Camera Issues................................................................................................................................................................288
Video & Audio Issues.................................................................................................................................................289
Why does the far-site display black screen when local starts a presentation? .................................291
System Maintenance..................................................................................................................................................292
Appendix.....................................................................................295
Appendix A: Time Zones ....................................................................................................................................................295
Appendix B: Trusted Certificates.....................................................................................................................................298
Index ...........................................................................................301

Administrator’s Guide for Yealink Video Conferencing Systems
xvi

System Overview
1
System Overview
This chapter contains the following information about VC400/VC120 video conferencing system:
VoIP Principles
Physical Features
Packaging Contents
System Component Instructions
Icon Instructions
LED Instructions
User Interfaces
VoIP Principles
VoIP
VoIP (Voice over Internet Protocol) is a technology that uses the Internet Protocol instead of
traditional Public Switch Telephone Network (PSTN) technology for voice communications.
It is a family of technologies, methodologies, communication protocols, and transmission
techniques for the delivery of voice communications and multimedia sessions over IP networks.
The H.323 and Session Initiation Protocol (SIP) are two popular VoIP protocols that are found in
widespread implementation.
H.323
H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T)
that defines the protocols to provide audio-visual communication sessions on any packet
network. The H.323 standard addresses call signaling and control, multimedia transport and
control, and bandwidth control for point-to-point and multi-point conferences.
It is widely implemented by voice and video conference equipment manufacturers, is used
within various Internet real-time applications, such as GnuGK and NetMeeting, and is widely
deployed by service providers and enterprises for both voice and video services over IP
networks.

Administrator’s Guide for Yealink Video Conferencing Systems
2
SIP
SIP (Session Initiation Protocol) is the Internet Engineering Task Force’s (IETF’s) standard for
multimedia conferencing over IP. It is an ASCII-based, application-layer control protocol
(defined in RFC 3261) that can be used to establish, maintain, and terminate calls between two
or more system. Like other VoIP protocols, SIP is designed to address the functions of signaling
and session management within a packet telephony network. Signaling allows call information
to be carried across network boundaries. Session management provides the ability to control
the attributes of an end-to-end call.
Physical Features
Video conferencing systems are in the overall network topology, which are designed to
interoperate with other compatible equipment, including application servers, media servers,
Internet-working gateways, and other systems.
In order to operate systems in your network successfully, the systems must meet the following
requirements:
A working IP network is established.
VoIP gateway is configured for SIP or H.323, and H.323 gatekeeper is configured for H.323.
You can also deploy Cloud server for Cloud platform.
The latest (or compatible) firmware of system is available.
A call server is active and configured to receive and send SIP/H.323 messages.
The VC400 and the VC120 have same physical interfaces, camera parameters and video
resolutions.
VC400/VC120 Codec Interface
-2 x HDMI
-1x DVI
-1x VGA
-1xVCS phone port(RJ-45)
-1x10/100/1000M Ethernet
-1 x Line-in (3.5mm)
-1 x Line-out (3.5mm)
-2 x USB2.0 port
-1 x power port
-Others: 1 x power key, 1 x security lock slot, 1 x reset slot

System Overview
3
Full-HD Camera
-1920x1080 video resolution
-Up to 18x optical zoom PTZ camera
-Pan range: ±100°
-Tilt range: ±30°
-Beauty shot feature
Video Resolution
-Full-HD 1080P at 30fps (1920x1080), from 1Mbps
-720P (1280x720), from 512Kbps
-W448P (768 x 448), WQVGA (400 x 240)
-4CIF (704×576), CIF (352 x 288)
Packaging Contents
We recommend that you use the accessories provided or approved by Yealink. The use of
unapproved third-party accessories may result in reduced performance
VC400 Packaging Contents
The following items are included in your package. If you find that anything is missing, contact
your system administrator.
VC400 Codec
VCC18 HD Camera

Administrator’s Guide for Yealink Video Conferencing Systems
4
VCP40 Video Conferencing Phone
L-Bracket (for installing the camera)
Camera Mounting Accessories
VCR10 Remote Control
AAA Batteries×2
Power Adapter