KUDO Help Center

Frequently Asked Questions

  • Accessing KUDO from China

    This article covers:

    China-based participants connectivity

    What is China Relay?


    China-based participants connectivity

    When China-based users access internet sites that are located outside of China the traffic must pass through the Chinese Firewall. The net result is impaired connectivity and lower bandwidths.

    Other things that have an impact on the connectivity to KUDO:

    On the COM and EU servers the Chinese attendees' connectivity will be slower because of:

    • Using a VPN, the traffic is routed to one of the VPN servers, then to us, so the data transfer (audio, video, screen-sharing) is slower;
    • Chinese Firewall -  one of the many issues causing slow data transfer is that it uses Deep Packet Inspection to monitor the internet, which sometimes may cause packet loss, meaning that the requested data couldn’t make it to a user’s computer, or it arrives later;
    • Distance;
    • Limited peering capacity - this is the arrangement of traffic exchange between Internet service providers (ISPs);
    • There are other factors, but these are the most important.

    If you are having constantly multiple attendees from China on the COM or EU domains, then we can enable on request the China Relay. The China Relay is not required by clients accessing from areas not subject to internet filtering, like Hong Kong. 


    What is 'China Relay'?

    The China Relay is basically an infrastructure that is deployed on the Chinese data centers to improve the connectivity and video bitrates of China-based users who are connecting to KUDO sessions outside of China (COM, EU).


    • Please note that there is a surcharge for the subscribed minutes from the China relay. 
    • Connectivity and media quality can depend on a number of factors, including the quality of the last mile, the traffic load on the ISP, and the performance of our data center.  As such connectivity and media quality can never be guaranteed.






  • KUDO Apps Mobile / Tablet

    KUDO Mobile Apps are available in both iOS and Android. If you do not have access to Google Play Store, you can download the latest Android App directly from the below link. 


    playstore.png                         appstore.png


    Android Mirror (Asia/China)


  • How using VPNs affect KUDO sessions?

    VPN's will always decrease your internet speed due to the processes involved when your internet traffic is tunneled through a remote server.

    This article covers:

    What is a VPN?

    How using a VPN affects internet speed?


    What is a VPN ?

    Simply put, a VPN stands between your computer and the internet. Imagine that you're on your computer and the cloud is the internet. Normally, your computer accesses the cloud directly  ("internet") via your internet service provider. 

    When using a VPN, your internet traffic is routed through the VPN server (which can be in a different city/country/continent), so the VPN server is accessing the internet on your behalf.


    How using a VPN affects internet speed?

    A VPN will always decrease your internet speed, as it adds a number of steps that were not initially present in your connection to KUDO. The main reasons for a decrease in internet speed are:


    Latency represents the amount of time between a user action and the resulting response. For example, the delay between when a session attendee clicks on a different language option during a session, and the time the audio reaches the attendee. 




    The main cause of latency when using a VPN is the physical distance between locations where the data is accessed and delivered. When a user makes an Internet request, the farther the request and subsequent response have to travel, the more delay the session attendee will experience. 

    Suppose Cecilia is based in Spain, and she uses a VPN server from Greece to connect to one of the sessions. Every time her computer communicates over the internet, it must send the request all the way to Greece, and then her VPN service will decrypt the request and forward it to KUDO. KUDO will then send a response back to the VPN server in Greece, and finally, the VPN will encrypt this response and send it to Cecilia in Spain.



    Different VPN's might be using different level of encryption and different implementation processes. The encryption/decryption process takes time, and it could add noticeable latency to your KUDO session.


    VPN Server Load

    When there are too many users connected to one VPN server (VPN customers choosing the same VPN server location as you do), the connection speed drops. 

    Suppose Nils is connecting to a VPN server at the same time as 1,000 other users, and the server only has enough capacity to handle 300 requests at a time. The server will likely get overloaded and start queueing or dropping requests, slowing load times for Nils and many of the VPN’s other users. This experience is especially common with free and discount VPN services.


  • KUDO bandwidth requirements

    This article covers the bandwidth requirements for using KUDO. In order to check the WebRTC bandwidth output of your network, you can take one of these tests:

    General Session Video Quality

    During a KUDO session, the video quality dynamically adjusts based on the strength of a user's network bandwidth. This is done by sending feedback data packets to the people on the Floor (participants that have shared their video) informing them about your network bandwidth and what video quality it's able to support. 

    The video bit-rate of the participants sharing their camera will be automatically adjusted based on the other participants' network conditions. The network stability and speed of the latter ones directly affect the quality of the video that will be shown on the Floor.


    Note: By default, when creating a meeting the settings video and audio settings are set to Adaptive. While these can be changed, we suggest keeping them as such, for a better overall experience.


    Bandwidth requirements for different session qualities

    For various resolutions and quality combinations, the bandwidth requirements are outlined below.

    • Excellent - None or imperceptible impairments in media
    • Acceptable - Some impairments in media, leading to some momentary disruptions

    Audio and Video Streams for PC (Active Participants)

    For the given qualities and resolutions, all the following conditions must met.

    Quality Video Resolution @ FPS Video kbps Packet Loss
    Excellent 1280x720 @ 30 > 1000 < 0.5%
    Excellent 640x480 @ 30 > 600 < 0.5%
    Excellent 352x288 @ 30 > 300 < 0.5%
    Excellent 320x240 @ 30 >300 < 0.5%
    Acceptable 1280x720 @ 30 > 350 < 3%
    Acceptable 640x480 @ 30 > 250 < 3%
    Acceptable 352x288 @ 30 > 150 < 3%
    Acceptable 320x240 @ 30 > 150 < 3% 


    Audio only streams (Interpreters)


    For the given qualities, the following conditions must be met.  

    Quality Audio kbps Packet Loss
    Excellent > 30 < 0.5%
    Acceptable > 25 < 5%


    Audio and Video Streams resolution

    • PC: The default video setting is of 640x480 pixels @ 30 fps;
    • Android: The default video setting is of 352x288 @ 30 fps in Android;
    • iOS: The default video setting is of 640x480 pixels @ 30 fps for iOS;
  • Countries with impaired access to KUDO

    You can join a meeting from any location. If you are connecting from a corporate network, check here the security adjustments that might need to be made on the network firewall (if present). 

    In addition, various Government restrictions on cross-border data flows may result in complete blockage, temporary disruption, degradation in the quality of audio and video, or delayed access to KUDO multilingual Web conferencing services. KUDO is aware that its  services may not always be reliably or directly accessed from the following list of countries:


    • China ((Learn more here about the China Relay solution)
    • Cuba
    • Crimea
    • Iran
    • North Korea
    • Sudan
    • Syria
    • UAE

    This list is non-exhaustive as such restrictions may be subject to change with short or no previous notice.

    Web meeting participants within these countries may wish to access KUDO through a VPN. Learn How using VPNs affect KUDO session?


  • Embedding custom code to a KUDO meeting

    For the time being, our platform does not allow any external trackers, links, or any type of custom code to be embedded in a KUDO meeting. 

    Because of this, any analytics tool that would allow you to measure your campaigns, actions, or clicks are cannot be added to KUDO. 

    We do provide a reporting solution that will allow you to get an overview of the meeting after the meeting has ended. 





See all 10 articles