Network Connectivity
  
Network Connectivity
The following are a few things you can do to improve and test your network connectivity to ensure that you have successful Chalk sessions.
• Run the following test to determine if there is an issue with your network blocking access to resources that Chalk needs: https://connect.vuforia.com/networktest
• Ensure that the following ports are open:
◦ HTTPS: 443
◦ UDP: 10,000 - 60,000
* 
Some corporate networks may block UDP in their network configuration, which may prohibit the use of Chalk within that network.
• A/V signaling communication, media relay servers, and additional connectivity requirements can be found here: https://www.twilio.com/docs/video/ip-address-whitelisting#media-servers
Session Quality
• 2.8 Mbps + is recommended for best quality
• At or below 0.5 Mbps may result in poor session quality
* 
A user not sharing their view should enable the Low bandwidth mode within a session so they can still view high-quality images with a slight delay from user sharing their view. To enable low bandwidth mode, tap the menu icon, and then tap the low bandwidth mode icon.
• Ensure that the devices being used for Chalk are supported. For more information, see Supported Mobile Devices