neels has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-hnbgw/+/34974?usp=email )
Change subject: allow (second) CS RAB Assignment Request without RTP info ......................................................................
Patch Set 4:
(1 comment)
Commit Message:
https://gerrit.osmocom.org/c/osmo-hnbgw/+/34974/comment/6f38066a_8221dc97 PS4, Line 19: Do not (yet?) supp
unrelated to this patch we certainly do need that. […]
the "yet" is about modifying an active RAB -- IIUC for handover that wouldn't be needed.
If we implement handover on 3G:
- intra-RNC handover would at most notify the CN after handover occurred, the RNC should 'hide' it from HNBGW and upwards. - inter-RNC / inter-RAT handover would establish a brand new RAB on another RNC/BSC/... and then assign the UE to that, so there wouldn't be a RAB modification.
A voice announcement should come from "behind" the MSC's MGW hop, so the active CS RAB should not need modification for that.
I hope I understood correctly...