Dahua Technology VTH2201DW User manual

IP Audio Indoor Station
Quick Start Guide
V1.0.2
Please scan the QR code to view the user’s manual.

II
Cybersecurity Recommendations
Mandatory actions to be taken towards cybersecurity
1. Change Passwords and Use Strong Passwords:
The number one reason systems get “hacked” is due to having weak or default passwords. It is
recommended to change default passwords immediately and choose a strong password whenever
possible. A strong password should be made up of at least 8 characters and a combination of special
characters, numbers, and upper and lower case letters.
2. Update Firmware
As is standard procedure in the tech-industry, we recommend keeping NVR, DVR, and IP camera
firmware up-to-date to ensure the system is current with the latest security patches and fixes.
“Nice to have” recommendations to improve your network security
1. Change Passwords Regularly
Regularly change the credentials to your devices to help ensure that only authorized users are able to
access the system.
2. Change Default HTTP and TCP Ports:
● Change default HTTP and TCP ports for systems. These are the two ports used to communicate and
to view video feeds remotely.
● These ports can be changed to any set of numbers between 1025-65535. Avoiding the default ports
reduces the risk of outsiders being able to guess which ports you are using.
3. Enable HTTPS/SSL:
Set up an SSL Certificate to enable HTTPS. This will encrypt all communication between your devices
and recorder.
4. Enable IP Filter:
Enabling your IP filter will prevent everyone, except those with specified IP addresses, from accessing
the system.
5. Change ONVIF Password:
On older IP Camera firmware, the ONVIF password does not change when you change the system’s
credentials. You will need to either update the camera’s firmware to the latest revision or manually
change the ONVIF password.
6. Forward Only Ports You Need:
● Only forward the HTTP and TCP ports that you need to use. Do not forward a huge range of numbers
to the device. Do not DMZ the device's IP address.
● You do not need to forward any ports for individual cameras if they are all connected to a recorder on

III
site; just the NVR is needed.
7. Disable Auto-Login on SmartPSS:
Those using SmartPSS to view their system and on a computer that is used by multiple people should
disable auto-login. This adds a layer of security to prevent users without the appropriate credentials from
accessing the system.
8. Use a Different Username and Password for SmartPSS:
In the event that your social media, bank, email, etc. account is compromised, you would not want
someone collecting those passwords and trying them out on your video surveillance system. Using a
different username and password for your security system will make it more difficult for someone to
guess their way into your system.
9. Limit Features of Guest Accounts:
If your system is set up for multiple users, ensure that each user only has rights to features and functions
they need to use to perform their job.
10. UPnP:
● UPnP will automatically try to forward ports in your router or modem. Normally this would be a good
thing. However, if your system automatically forwards the ports and you leave the credentials defaulted,
you may end up with unwanted visitors.
● If you manually forwarded the HTTP and TCP ports in your router/modem, this feature should be
turned off regardless. Disabling UPnP is recommended when the function is not used in real
applications.
11. SNMP:
Disable SNMP if you are not using it. If you are using SNMP, you should do so only temporarily, for
tracing and testing purposes only.
12. Multicast:
Multicast is used to share video streams between two recorders. Currently there are no known issues
involving Multicast, but if you are not using this feature, deactivation can enhance your network security.
13. Check the Log:
If you suspect that someone has gained unauthorized access to your system, you can check the system
log. The system log will show you which IP addresses were used to login to your system and what was
accessed.
14. Physically Lock Down the Device:
Ideally, you want to prevent any unauthorized physical access to your system. The best way to achieve
this is to install the recorder in a lockbox, locking server rack, or in a room that is behind a lock and key.
15. Connect IP Cameras to the PoE Ports on the Back of an NVR:
Cameras connected to the PoE ports on the back of an NVR are isolated from the outside world and
cannot be accessed directly.
16. Isolate NVR and IP Camera Network

IV
The network your NVR and IP camera resides on should not be the same network as your
public computer network. This will prevent any visitors or unwanted guests from getting access
to the same network the security system needs in order to function properly.

V
Foreword
General
This document mainly introduces installation and basic operation of IP audio indoor station.
Safety Instructions
The following categorized signal words with defined meaning might appear in the Manual.
Signal Words
Meaning
Indicates a high potential hazard which, if not avoided, will result
in death or serious injury.
Indicates a medium or low potential hazard which, if not avoided,
could result in slight or moderate injury.
Indicates a potential risk which, if not avoided, could result in
property damage, data loss, lower performance, or unpredictable
result.
Provides methods to help you solve a problem or save you time.
Provides additional information as the emphasis and supplement
to the text.
Revision History
No.
Version
Revision Content
Release Date
1
V1.0.0
First release
2017.10.18
2
V1.0.1
Change size
2017.11.27
3
V1.0.2
Add privacy protection notice
2018.05.23
Privacy Protection Notice
As the device user or data controller, you might collect personal data of others' such as face,
fingerprints, car plate number, Email address, phone number, GPS and so on. You need to be
in compliance with the local privacy protection laws and regulations to protect the legitimate
rights and interests of other people by implementing measures include but not limited to:
providing clear and visible identification to inform data subject the existence of surveillance
area and providing related contact.
About the Manual
The Manual is for reference only. If there is inconsistency between the Manual and the
actual product, the actual product shall prevail.

VI
We are not liable for any loss caused by the operations that do not comply with the Manual.
The Manual would be updated according to the latest laws and regulations of related
regions. For detailed information, see the paper User's Manual, CD-ROM, QR code or our
official website. If there is inconsistency between paper User's Manual and the electronic
version, the electronic version shall prevail.
All the designs and software are subject to change without prior written notice. The product
updates might cause some differences between the actual product and the Manual. Please
contact the customer service for the latest program and supplementary documentation.
There still might be deviation in technical data, functions and operations description, or
errors in print. If there is any doubt or dispute, please refer to our final explanation.
Upgrade the reader software or try other mainstream reader software if the Guide (in PDF
format) cannot be opened.
All trademarks, registered trademarks and the company names in the Manual are the
properties of their respective owners.
Please visit our website, contact the supplier or customer service if there is any problem
occurred when using the device.
If there is any uncertainty or controversy, please refer to our final explanation.

VII
Important Safeguards and Warnings
The following description is the correct application method of the device. Please read the
document carefully before use, in order to prevent danger and property loss. Strictly conform to
the document during application and keep it properly after reading.
Power Requirement
Please modify user’s default password timely after device deployment, in order to prevent
embezzlement.
Please don’t place and install the device in an area exposed to direct sunlight or near heat
generating device.
Please don’t install the device in a humid, dusty or fuliginous area.
Please keep its horizontal installation, or install it at stable places, and prevent it from
falling.
Please don’t drip or splash liquids onto the device; don’t put on the device anything filled
with liquids, in order to prevent liquids from flowing into the device.
Please install the device at well-ventilated places; don’t block its ventilation opening.
Use the device only within rated input and output range.
Please don’t dismantle the device arbitrarily.
Operating Requirement
The product shall use electric wires (power wires) recommended by this area, which shall
be used within its rated specification!
Please use power supply that meets SELV (safety extra low voltage) requirements, and
supply power with rated voltage that conforms to Limited Power Source in IEC60950-1. For
specific power supply requirements, please refer to device labels.
Appliance coupler is a disconnecting device. During normal use, please keep an angle that
facilitates operation.

VIII
Table of Contents
Cybersecurity Recommendations................................................................................................................... II
Foreword................................................................................................................................................................ V
Important Safeguards and Warnings........................................................................................................... VII
1Product Overview.............................................................................................................................................. 1
1.1 Front Panel ................................................................................................................................................ 1
1.2 Rear Panel Interface................................................................................................................................. 2
2Device Installation............................................................................................................................................. 4
2.1 Before Installation..................................................................................................................................... 4
2.2 Installation.................................................................................................................................................. 4
3Device Debugging............................................................................................................................................. 6
3.1 Debugging Settings.................................................................................................................................. 6
3.1.1 VTO Debugging............................................................................................................................. 6
3.1.2 VTH Debugging........................................................................................................................... 14
3.2 Debugging Verification........................................................................................................................... 20
4Functional Operation...................................................................................................................................... 21
4.1 Function of Talk with Management Center.......................................................................................... 21
4.1.1 Call Management Center........................................................................................................... 21
4.1.2 Call from Management Center.................................................................................................. 21
4.2 Function of Talk with VTO...................................................................................................................... 21
4.3 Unlock Function....................................................................................................................................... 21
4.4 DND Function.......................................................................................................................................... 21
4.4.1 Enable DND................................................................................................................................. 21
4.4.2 Disenable DND............................................................................................................................ 22
4.5 Arm and Disarm....................................................................................................................................... 22
4.5.1 Arm................................................................................................................................................ 22
4.5.2 Disarm........................................................................................................................................... 22
4.6 Alarm Prompt and Uploading Function................................................................................................ 22
5FAQ...................................................................................................................................................................... 23
Appendix 1 Technical Parameter.................................................................................................................. 24
Appendix 2 Packing List................................................................................................................................. 25

1
1Product Overview
1.1 Front Panel
Figure 1-1
No.
Name
Description
1
Microphone
Audio input.
2
Concealed indicator light
Indicator light flashes: device deployment.
Indicator light is normally on: the device is in DND status.
Indicator light is off: the device is normal.
3
Speaker
Audio output.
4
SOS
Press this key to call Management Center at once.
Plus Sign
In call status, press this key to increase talk volume.
In standby status, press this key to increase ring volume.
Call
In case of incoming call, press this key to answer the call.
During talk, press this key to hang up.
In case of messages, in standby status, press this key to play

2
No.
Name
Description
the messages.
Subtraction
Sign
In call status, press this key to reduce talk volume.
In standby status, press this key to reduce ring volume.
In standby status, press this key to reduce main VTH volume
to 0, and the device enters DND status.
Unlock
Press this key during talk, and the corresponding VTO unlocks.
+
Plus Sign+
Call Key
In standby status, press “Plus Sign+ Call Key”to arm and
disarm.
In disarmed status, press this combination key to arm.
Indicator light flashes and the device beeps continuously.
In armed status, press this combination key to disarm.
Indicator light turns off and the device beeps twice.
+
Subtraction
Sign+ Call
Key
In standby status, press “Subtraction Sign+ Call Key”to
switch rings.
Table 1-1
1.2 Rear Panel Interface
Figure 1-2
Reset Key