Technical requirements for video calls

Author: Stacy Smith

Last update: January 14, 2025.

To ensure stable communication quality, check the network and equipment settings.

On the commercial plan, up to 48 users can join a video call. On the free plan, you are limited to 12 users.

Requirements for equipment and connection quality

Equipment. You can use video calls in a browser, Bitrix24 Messenger, and mobile app. Always update to the latest versions. Outdated versions may experience unstable call operations.

Recommended browsers: Safari for macOS and Google Chrome for other systems.

Connection speed. The minimum network speed is about 10 megabits per 20 people. For different video qualities, you need:

for 720p, 30 fps: 1-2 Mbps
for 360p, 30 fps: 0.5-1 Mbps
for 180p, 30 fps: 0.1-0.5 Mbps

The video quality will change based on your internet speed. Use the formula below to figure out how much speed you need:
from 0.1 to 2 Mbps * [number of users in a video call] * 2

Microphone

. To connect to an audio, video or video conference call, the user must have a microphone. You need to turn on the built-in microphone of your computer, mobile device or external microphone.

Local network settings

Verify the network settings used for making calls. Make sure these ports are open:

443
7881
UDP 1024-65000

Sometimes, it may be necessary to have a detailed configuration of the local network. Contact Bitrix24 support for clarification.
How to contact Bitrix24 Support

Technical requirements for Bitrix24 On-Premise version

Video calls are available only if you have an active Bitrix24 On-Premise license. Check the settings for the correct operation of the calls.

Install these modules: Video Conferencing (call), Mobile Calls (callmobile), and Telephony (voximplant).
Activate the Use Voximplant SFU server for video calls option in the settings of the Instant Messenger module (im).
Make sure /bitrix/services/main/ajax.php is accessible from outside your setup. If you need to give access to whitelisted addresses only, contact Bitrix24 support.
Check if the site domain is valid and set up an SSL certificate, either your own or a free one from Let's Encrypt.
Configure certificates