1，The full form of SFU is selective forwarding unit

SFU stands for Selective Forwarding Unit.

At times, the term is used to describe a type of video routing device, while at other times it will be used to indicate the support of routing technology and not a specific device.

An SFU is capable of receiving multiple media streams and then decide which of these media streams should be sent to which participants.

So how does the SFU mode work?

Your stream is directly sent to your video call participant and vice verse. This happens without additional processing of the video layout. However, this mode is only activated when 2 people have a video call. If a third party joins, we automatically switch your video call to MCU mode. Starting at 3 participants, it makes sense to use the MCU mode again in order to keep the premium video and audio quality.  In our tool, we call it fusion.

SFU& MCU

2， The Full Form of SFU is‍ Switch Fuse Unit.

It is Switched Fuse Unit. It has one switch unit and one fuse unit. When we operate the breaker, the contacts will get closed through switch and then the supply will pass through the fuse unit to the output.

Whereas in Fuse Switch Unit there is no separte switch and fuse unit. There is only fuse unit which act itself as a switch. When we operate the fuse unit will close the input and output of the breaker.

SFU has been used to trip the circuit,particularly for high capacity tripping.

Where as MCB&MCCB are used for low capacity tripping.