Can we have VoNR call over FR2 as well in SA?

5G NR
,
14

Summary, as I mentioned above:

EPS fallback to E-UTRA (LTE) can be done with the following options:

  1. Blind RwR (Release with Redirect)
  2. Measurement-based RwR
  3. Measurement-based PSHO

To reduce the delay to setup the VoLTE call in EPS, EPS Fallback for IMS Voice requires the N26 interface to be supported between EPC and 5GC.

So , N26 interface is one of the requirements for EPS Fallback.

See this (This post will help you to understand better why N26 interface is needed): 5G System (5GS) and 4G system (EPS) interworking - Single-Registration Mode

And for more clarification , I created a post to help you more in case of EPS Fallback: 5GS, EPS Fallback for IMS voice service