Pexip Cisco which may also be used in Skype for Business implementations the Microsoft A-V Conferencing.
Skype for business video conference limit. You can also find comparisson with the SfB server on the same page. Skype for Business Online provides multiparty three or more users audio and video conferencing capabilities. Skype has a few limitations in the business environment which may mean it is not the right fit for your business video conferencing requirements.
Most Skype for Business customers use the Microsoft-provided Audio-Video Conferencing Server as their conference bridge also known as a multipoint control unit MCU. The Meeting should also be able to host up to 250 participants. If you need to have video meetings that involve more people Skype for Business is a paid-for upgrade.
By default the Global policy has. This method is by far the easiest option to limiting application sharing bandwidth within Skype4B. Invite up to 99 people plus you and enjoy free video calls using Skype.
Best of all your personal invitation link doesnt expire and can be used anytime. If you dont have Skype installed thats ok you can enjoy it on your browser. Skype for Business Multiparty Audio and Video.
Here is an article for your reference. For larger meeting use SfB Broadcast. So your can let 16 people have video chat in Skype for Business.
Based on the official document the number is 250. Skype for Business Online Limits. The limits for SfB Online are listed here.