To ensure stable call quality, check your network and device settings.

Equipment and connection requirements

Devices and apps. You can join video calls in a browser, Bitrix24 Messenger, or the mobile app. Always use the latest version. Older versions may cause connection issues.

Recommended browsers:

• Safari for macOS
• Google Chrome for other systems

Connection speed. Plan for at least 10 Mbps per 20 participants.

Recommended speeds by video quality:

• 720p (30 fps): 1–2 Mbps
• 360p (30 fps): 0.5–1 Mbps
• 180p (30 fps): 0.1–0.5 Mbps

Video quality adjusts automatically based on your connection.

Use this formula to estimate bandwidth:
0.1–2 Mbps × number of participants × 2

Microphone. You need a working microphone for audio or video calls. Turn on the built-in or external microphone on your device.

Local network settings

Check your network configuration. Make sure these ports are open:

• 443
• 7881
• UDP 1024-65000

Technical requirements for Bitrix24 On-Premise

Video calls are available only with an active Bitrix24 On-Premise license.

Check the following settings:

• Install these modules: Video calls (call), Mobile video calls (callmobile), and Telephony (voximplant).

• Enable Use Bitrix24 SFU cloud servers for video calls in the Video calls (call) module settings.

• Make sure /bitrix/services/main/ajax.php is accessible from outside your network. If you restrict access by IP, contact Bitrix24 Support.

• Verify your domain and set up an SSL certificate. You can use your own certificate or a free one from Let’s Encrypt.
  Configure certificates