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After-sales service policy

VAD promises that the communication products produced by VAD comply with industrial-grade design and manufacturing standards, ensuring that they can work stably under the working environment conditions specified in the product documents. When you need after-sales service support, please refer to the following information:

  • 1

    Malfunctions within the warranty period

    This warranty regulation is limited to repairing or replacing faulty products during the warranty period.

  • 2

    Service Form

    On-site support, telephone support and E-MAIL services.

  • 3

    Response Time

    For any technical problems related to VAD products, VAD Technical Service Center responds immediately. VAD will provide 7×24 technical services throughout the year to solve customer problems at any time. If the technical service center remotely determines that on-site troubleshooting is required, we will arrive at the site within 24 hours and solve the problem within 48 hours, traffic conditions permitting.

  • 4

    Service Content

    Customer training, technical consultation and product application planning solutions.

    Upgrade service: In order to adapt to future business development, VAD will provide upgrade solutions according to user needs and network technology development. In addition, VAD will also provide product update materials and corresponding overall solutions for reference.

    Equipment maintenance: During the warranty period, if the failure is caused by hardware problems of VAD products under normal use, we will be responsible for providing free maintenance.

    Follow-up service: For products beyond the warranty period, VAD will continue to provide users with high-quality paid services.

    Technical training: VAD company provides technical training on the application and maintenance of products tailored to the needs of partners. The proposal of the training program, the location of the training and the determination of the number of people can be determined through consultation between the two parties.

    Inspection: According to the signing of the contract, value-added services such as telephone interviews and on-site inspections are provided.

  • 5

    Disclaimer Of Liability

    Failures caused by the following factors are not within the scope of warranty liability, and maintenance fees need to be charged.

    Man-made damage during transportation and handling;

    Damage caused by incorrect installation method;

    Damage caused by self-configured bad power supply;

    Damage caused by irresistible natural disasters such as earthquakes, fires, and floods;

    Product damage caused by self-disassembly and maintenance.

    During the service process of both parties, VAD promises to strictly abide by business ethics and keep confidential any technical information and commercial secrets obtained due to work needs.

    Your satisfaction is our goal!

FAQ
  • Q1

    How to connect rack-mounted industrial switch equipment?

    1) Connect one end of the grounding wire to a suitable location, and use washers and screws to fix the grounding piece to the industrial switch panel;
    2) Connect the power cord to the power terminal of the industrial switch;
    3) Connect the network cable to the RJ45 interface of the industrial switch;
    4) Insert the SFP+ or SFP optical module into the port and connect the optical fiber to the optical fiber transceiver.
  • Q2

    How to configure the PC for the managed industrial Ethernet switch?

    When accessing the industrial switch through the Web, the IP addresses of the industrial switch and the PC must be in the same network segment, so the IP address of the PC must be modified to ensure that it and the IP of the industrial switch are in the same local area network. Windows users please refer to the following steps: Start→Control Panel→Network and Internet Connections→Network Connections→Local Area Connection→Properties→Internet Protocol (TCP/IP) The default IP address of the industrial switch is: 192.168.16.253. Set the IP address of the PC to: 192.168.16.X (X is any valid value from 2 to 254 except 253). After changing the IP address of the PC, you can access the Web page of the industrial switch through the default IP address 192.168.16.253 and perform related configuration operations on it.
  • Q3

    How to connect the industrial switch to the industrial router?

    Two methods: The first method: dynamic IP method. 1. Plug in the industrial router, do not connect it to the industrial switch first, and reset the industrial router (restore to factory settings); 2. Connect the computer to any LAN port of the industrial router and enter the setting page; 3. Set according to the dynamic IP mode; 4. Then Set the SSID, encryption method and password; 5. Save and restart; 6. After setting, connect the network cable from the industrial switch to the WAN port of the industrial router.
    The second method: wireless AP method. 1. First connect the computer to the LAN port of the industrial router and change the IP address of the industrial router. We only need to change the IP address of the industrial router to 192.168.30.121; 2. Then turn off the DHCP function of the industrial router in the settings; 3. Finally, connect the industrial switch The network cable is connected to the LAN port of the industrial router (any one will do). Note that it cannot be the WAN port.
  • Q4

    How to solve the issue of no output from the console port?

    After confirming that there is no problem with the configuration, if the console line is connected and still cannot output normally, then connect the console line to other devices to test, and you can log in to the device normally. If you can log in normally, it means that the console line is normal, the computer is normal, and the software is also normal; If you cannot log in and test the replacement console line, if you replace another console line and the test is normal, it means that there is a problem with the original console line and you cannot log in to the device normally.
    After confirming that there are no problems with the configuration and configuration line, the console line connection still cannot output normally. Replace the computer or software test. If the new console line can log in normally after replacing the computer, it may be caused by a problem with the computer itself. For example, after replacing the computer If the fault persists and you can log in normally after changing to a new software, it is caused by a software problem.
    Confirm the configuration and configuration line, and there are no problems with the computer. However, the console line is still unable to output normally. Enter ctrl+shift+6 and then enter x (first press the CTRL and Shift keys, then enter 6, and then release all the keys. Then enter x) to see if the console port can return to normal. If it is possible, it proves that it is a software problem, and the problem can be solved by upgrading the equipment when entering the bottom layer. If not, it can be determined that it is a switch hardware problem, such as stacking module or line hardware failure causing the whole machine to hang up, console control circuit failure, etc. of.
  • Q5

    What are the commonly used network protocols?

    TCP (Transport Control Protocol): Transmission Control Protocol.
    IP (Internet Protocol): Internet Protocol.
    FTP (File Transfer Protocol): Remote file transfer protocol, allowing users to copy files on the remote host to their own computer.
    SMTP (Simple Mail transfer Protocol): Simple Mail Transfer Protocol, used to transfer emails.
    NFS (Network File Server): Network file server, which allows multiple computers to transparently access each other's directories.
    UDP (User Datagram Protocol): User Datagram Protocol. It is located at the transport layer like TCP and is used in conjunction with the IP protocol. It omits the header when transmitting data.
    However, it cannot provide retransmission of data packets, so it is suitable for transmitting shorter packets. document.

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