Free Video Call Limits

How many people are allowed in a free meeting and what’s the time limit on it? 

I’m getting a lot of conflicting information about this and would like some written official thing proving whatever the answer is. 

For example this says 24 hours

https://support.ringcentral.com/article-v2/RingCentral-Video-FAQ.html?brand=RingCentral&product=RingEX&language=en_US#GUID-b3f7a87f-eb1a-4aed-8872-ec58d1169552-en_us_manage-video

The last FAQ says 50 minutes

https://www.ringcentral.com/video.html

This says 4 people can join. Then 500 with an add on, then 100 but there’s a 40 minute limit for more than 2 people.

https://support.ringcentral.com/article-v2/Which-Plan-allows-you-host-Meetings.html?brand=RC_US&product=RingCentral_Meetings&language=en_US