What is VoLTE EPS Fallback in 5G SA?

Hi All.

What is VoLTE EPS Fallback in 5G SA?

Is it like SRVCC or CSFB type?

EPSFB from NR SA means network do not support VoNR or UE do not support VoNR.

Then Voice call fall back to lower RAT, i.e. LTE.

So, same like CSFB.

Yes, kind of. But CSFB means no CS support in LTE time.

Here EPSFB means CS support in LTE.

Thanks, got it.

1 Like