opensource mcu

it is used as Multipoint Control Unit (MCU) manager. The application can managed any number of MCU (a.k.a Bridge) where each

Bridge can support up to 64 participants.

it is deprecated , but believed there will be another software to replace it.

2. openMCU

IT is called openh323, it doesn't support SIP.

http://sourceforge.net/projects/openh323/files/openmcu/ 

3. 

murillo128

SIP Video Multiconference Media Server with WebRTC support. 

http://sourceforge.net/projects/mcumediaserver/