Some network switches or firewalls may have certain packet filtering features which can prevent network traffic, including multicast packets. Please ensure that features such as IGMP V2 snooping are enabled.
The address space used for our multicast transmission is 126.96.36.199 – 188.8.131.52.
It is recommended that wherever possible the teacher and students for a classroom are connected to the same network switch in order to optimise both audio and screen data transfers. If this is not the case then the separate switches may need their configuration changed to allow multicast transmissions between them for the above address space.