Why Voice in 5G NSA is not transmitted by NR node?

5G NR
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1

Hi Experts.
In 5G NSA, even EPC is connected to IMS, why Voice is not transmitted by NR node?
Does gNB in NSA don’t support QCI1?

2

SCG is not intended for IMS (qcis 1 and 5 traffic).
It is in the 3GPP specs.

3

Only for QCI 6~9?

4

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As per this, does it mean SCG is intended for voice only in case of SCG bearer (option 3A) and not SCG split bearer (option 3X)?

5

Look at the structures.
As per then SCG do not support S1U in option 3.

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6

I am asking about 3A, not option 3. :wink:

7

Right, pardon please.

8

Qci1 is voice call, it must be over LTE leg.
But qci2 is video call, it can be over NR leg in NSA mode, right?