Yealink VC Series Service manual

Administrator‘s Guide for Yealink Video Conferencing Systems
ii
Copyright © 2015 YEALINK NETWORK TECHNOLOGY
Copyright © 2015 Yealink Network Technology CO., LTD. All rights reserved. No parts of this
publication may be reproduced or transmitted in any form or by any means, electronic or
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gives its consent to downloading and printing copies of the content provided in this file for
private use only and not for redistribution. No parts of this publication may be subject to
alteration, modification or commercial use. Yealink Network Technology CO., LTD. will not be
liable for any damages arising from use of an illegally modified or altered publication.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE
SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE AND PRESENTED
WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR USE OF PRODUCTS.
YEALINK NETWORK TECHNOLOGY CO., LTD. MAKES NO WARRANTY OF ANY KIND WITH
REGARD TO THIS GUIDE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Yealink Network Technology
CO., LTD. shall not be liable for errors contained herein nor for incidental or consequential
damages in connection with the furnishing, performance, or use of this guide.
Hereby, Yealink Network Technology CO., LTD. declares that this phone is in conformity
with the essential requirements and other relevant provisions of the CE, FCC.
This device is marked with the CE mark in compliance with EC Directives 2006/95/EC and 2004/108/EC.
This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired
operation.

Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experience radio/TV technician for help.
To avoid potential effects on the environment and human health as a result of the presence
of hazardous substances in electrical and electronic equipment, end users of electrical and
electronic equipment should understand the meaning of the crossed-out wheeled bin
symbol. WEEE must not be regarded as unsorted municipal waste and must be collected
and disposed of separately by a competent authority.
We are striving to improve our documentation quality and we appreciate your feedback. Email
your opinions and comments to [e-mail].

Administrator‘s Guide for Yealink Video Conferencing Systems
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About This Guide
v
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 VCS 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.
This guide covers the VC400 and VC120 video conferencing systems. In addition to the
administrator guide, the following related documents 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.
You can download the above documentations from Yealink website:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142
For support or service, please contact your Yealink reseller or go to Yealink Technical
Support online: http://www.yealink.com/Support.aspx.
This administrator guide includes the following chapters:
Chapter 1, ―System Overview‖describes system conponents, icons and Indicator
LEDs.

Administrator‘s Guide for Yealink Video Conferencing Systems
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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 4, ―System Management‖describes how to manage system contacts and
call history.
Chapter 6, ―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.

Table of Contents
vii
About This Guide ...................................................................... v
Documents .................................................................................................................................v
In This Guide ..............................................................................................................................v
Table of Contents ....................................................................vii
System Overview ..................................................................... 1
VoIP Principles............................................................................................................................1
Packaging Contents...................................................................................................................2
Optional Accessory.............................................................................................................4
System Component Instructions ................................................................................................5
VC400/VC120 Codec ...........................................................................................................5
VCC18 HD Camera .............................................................................................................7
VCP40 Video Conferencing Phone......................................................................................7
VCR10 Remote Control...................................................................................................... 10
Icon Instructions .......................................................................................................................12
Icons on Display Device....................................................................................................12
Icons on the VCP40 Video Conferencing Phone...............................................................13
LED Instructions ........................................................................................................................14
User Interfaces.........................................................................................................................15
Remote Control .................................................................................................................16
Web User Interface ...........................................................................................................16
Getting Started....................................................................... 17
System Installation................................................................................................................... 17
Installing the VC400/VC120 Video Conferencing System................................................. 18
Installing the Camera .......................................................................................................19
Installing Batteries in the Remote Control ........................................................................21
Connecting the CPE80 Expansion Microphone................................................................21
Powering the System On and Off............................................................................................22
System Initialization .................................................................................................................22
System Startup.........................................................................................................................23
Setup Wizard............................................................................................................................23
Placing a Test Call from the Yealink VCS System ....................................................................27
Configuring Network .............................................................. 29

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Preparing the Network.............................................................................................................29
Configuring LAN Properties .....................................................................................................30
DHCP ................................................................................................................................. 30
Configuring Network Settings Manually ..........................................................................33
Configuring Network Speed and Duplex Mode.....................................................................35
LLDP.......................................................................................................................................... 37
VLAN.........................................................................................................................................41
802.1X Authentication ..............................................................................................................44
H.323 Tunneling........................................................................................................................49
Configuring the System for Use with a Firewall or NAT ..........................................................52
Reserved Ports...................................................................................................................53
NAT ....................................................................................................................................56
H.460 Firewall Traversal ....................................................................................................57
Intelligent Firewall Transversal ................................................................................................58
Quality of Service ....................................................................................................................59
VPN...........................................................................................................................................62
Configuring Call Preferences ................................................. 65
Configuring SIP Settings...........................................................................................................65
Configuring H.323 Settings ......................................................................................................68
Codecs .....................................................................................................................................71
Call Type...................................................................................................................................72
Do Not Disturb.......................................................................................................................... 74
Auto Answer.............................................................................................................................75
Call Match................................................................................................................................76
History Record..........................................................................................................................77
Bandwidth................................................................................................................................ 78
Configuring System Settings .................................................. 81
General Setting........................................................................................................................81
Site Name..........................................................................................................................81
Backlight of the VCP40 Video Conferencing Phone .........................................................82
Language ..........................................................................................................................83
Time and Date...................................................................................................................84
Automatic Sleep Time....................................................................................................... 91
Hide IP Address.................................................................................................................92
Relog Offtime ....................................................................................................................93
Key Tone ............................................................................................................................ 94
Audio Setting ........................................................................................................................... 95
Audio Output Device ........................................................................................................95
Audio Input Device............................................................................................................97
Volume...............................................................................................................................98
Adjusting MTU of Video Packets..............................................................................................99

Table of Contents
ix
Dual-Stream Protocol............................................................................................................. 101
Mix Sending........................................................................................................................... 102
Configuring Camera Settings................................................................................................ 103
Far Control of Near Camera.................................................................................................. 107
Camera Control Protocol ....................................................................................................... 109
Tones ...................................................................................................................................... 110
System Management............................................................115
Local Directory ....................................................................................................................... 115
LDAP ....................................................................................................................................... 120
Call History............................................................................................................................. 124
Search Source List in Dialing ................................................................................................. 126
Dual Screen............................................................................................................................ 127
Configuring Security Features...............................................129
User Mode ............................................................................................................................. 129
Administrator Password......................................................................................................... 130
Web Server Type.................................................................................................................... 132
Transport Layer Security ........................................................................................................ 134
Secure Real-Time Transport Protocol ..................................................................................... 141
H.235 ...................................................................................................................................... 143
System Maintenance ............................................................147
Upgrading Firmware ............................................................................................................. 147
Importing/Exporting Configuration........................................................................................ 148
Resetting to Factory ............................................................................................................... 148
SNMP...................................................................................................................................... 150
Troubleshooting .....................................................................153
Troubleshooting Methods ...................................................................................................... 153
Viewing Log Files............................................................................................................. 153
Capturing Packets ........................................................................................................... 155
Getting Information from Status Indicators .................................................................... 156
Analyzing Configuration Files ......................................................................................... 157
Viewing Call Statistics..................................................................................................... 157
Using Diagnostic Methods.............................................................................................. 157
Troubleshooting Solutions ...................................................................................................... 159
General Issues ................................................................................................................ 159
Camera Issues................................................................................................................. 161
Video & Audio Issues....................................................................................................... 162
System Maintenance...................................................................................................... 163

Administrator‘s Guide for Yealink Video Conferencing Systems
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Appendix ...............................................................................165
Appendix A: Time Zones ....................................................................................................... 165
Appendix B: Trusted Certificates ........................................................................................... 167
Index ......................................................................................169

System Overview
1
This chapter contains the following information about VC400/VC120 video conferencing
system:
VoIP Principles
Packaging Contents
System Component Instructions
Icon Instructions
LED Instructions
User Interfaces
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.
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

Administrator‘s Guide for Yealink Video Conferencing Systems
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calls between two or more endpoints. 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.
The following items are included in your package. If you find anything missing, contact
your system administrator.
VC400/VC120 Codec
VCC18 HD Camera
L-Bracket ( for installing the camera)
Camera Mounting Accessories

System Overview
3
VCP40 Video Conferencing Phone
VCR10 Remote Control
2 AAA Batteries
Power Adapter
Cables (for VC400)

Administrator‘s Guide for Yealink Video Conferencing Systems
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Cables (for VC120)
7 Cable Ties
Quick Start Guide
Check the list before installation. If you find anything missing, contact your system
administrator.
The following item is an optional accessory for the VC400/VC120 system. You can buy it
separately if necessary.
The CPE80 expansion microphone is used for expanding the audio pickup range.
CPE80 Expansion Microphone

System Overview
5
VC400/VC120 codec supports 1080P full HD video. It supports both H. 323 and SIP
protocols and can connect to a mainstream video conferencing system.
Strong audio/video processing ability, rich interfaces, compatibility with different
display devices and adaptive resolution make it easy to use.
VC400/VC120 codec front panel

Administrator‘s Guide for Yealink Video Conferencing Systems
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VC400/VC120 codec back panel
Port Name
Description
①
Power Button
Powers the system on or off
②
LED Indicator
Indicates the system statuses
③
USB
Inserts a USB flash drive to the port for storing
screenshots and recording videos
④
PC
Connects to a PC for sharing documents or videos
during a conference call
⑤
Camera
Connects to a camera
⑥
Display1
Connects to a display device for displaying video
images.
When connecting only one display device to the
VC400/VC120 codec, Display1 port is the only
available port.
⑦
Display2
Connects to another display device for displaying
video images
⑧
Line In
Connects to an audio input device using the supplied
audio cable
⑨
Line Out
Connects to an audio output device using the supplied
audio cable
⑩
Audio In
Connects to the VCP40 video conferencing phone
⑪
Internet
Connects to the network devices
⑫
DC19V
Connects to the power adapter
⑬
Reset Key
Resets the system to factory defaults
⑭
Security Slot
Allows you to connect a universal security cable to
VC400/VC120 codec, so you can lock it down. The
system cannot be removed when it is locked.

System Overview
7
The VCC18 HD camera supports 18x optical zoom, white balance and automatic gain.
Exceptionally clear images can bring you an immersive experience.
You can use the remote control to adjust the position or focus of the camera. The VCC18
camera can be panned (± 100 degrees range), tilted (± 30 degrees range).
Infrared Sensor
The infrared sensor is located within the Yealink logo. Aim the remote control at the
camera IR sensor to operate the unit.
The VCP40 video conferencing phone can be used as the speakerphone and
microphone for the system. It supports 360-degree audio pickup with a radius of 3

Administrator‘s Guide for Yealink Video Conferencing Systems
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meters to achieve ultra-HD voice.
You can place calls, answer calls or view directory and call history on the VCP40 phone.

System Overview
9
System component instructions for the VCP40 phone are:
Item
Description
①
LCD Screen
Shows information about calls, messages, soft keys,
time, date and other relevant data:
• Call information—call duration
• Icons (for example, )
• Missed call information
• Time and date
②
Soft Keys
Label automatically to identity their context-sensitive
features.
③
On-hook Key
Rejects or ends a call or returns to the previous screen.
④
Scrolls upwards through the displayed information.
⑤
Enters list or answers incoming calls.
⑥
Scrolls downwards through the displayed information.
⑦
Keypad
Provides the digits and symbol characters ―.‖‖#‖.
⑧
Off-hook Key
Initiates a call or answers a call.
⑨
Presentation Key
Enables or disables presentation.
⑩
Mute Key
Toggles mute feature.
⑪
Volume Key
Adjusts the volume of the speakerphone and ringer.
⑫
Microphone
Picks up voice.
⑬
LED Indicators
Indicates phone and call statuses.
⑭
Speakerphone
Provides ringer and hands-free (speakerphone) audio
output.
⑮
MIC Port
Connects to a CPE80 expansion microphone.
⑯
Security Slot
Allows you to connect a universal security cable to your
phone, so you can lock it down. The phone cannot be
removed when it is locked.
⑰
Audio Out Port
Connects to the VCP40 phone using the Ethernet cable
labeled Audio in.
Provides the power supply for the VCP40 phone

Administrator‘s Guide for Yealink Video Conferencing Systems
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VCR10 remote control is compact, and has definite function zoning. Users can organize
conferences easily using infrared signals.
Hardware components of the remote control:
Item
Description
①
Sleep Key
Puts the system to sleep or wakes the system up.
②
Red Shortcut Key
Located at the bottom left of the screen. Label
automatically identifies context-sensitive features.
In the idle screen, this is used to enter the main menu
screen and corresponds to the Menu soft key.
③
Yellow Shortcut Key
Located at the bottom of the screen. Label automatically
identifies context-sensitive features.
In the idle screen, this is used to enter the pre-dialing
screen, and corresponds to the Call soft key.