Change in osmo-msc[master]: a_iface: Include CSFB Indication into BSSMAP CLEAR COMMAND

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Harald Welte gerrit-no-reply at lists.osmocom.org
Mon Feb 4 20:00:12 UTC 2019


Harald Welte has posted comments on this change. ( https://gerrit.osmocom.org/12830 )

Change subject: a_iface: Include CSFB Indication into BSSMAP CLEAR COMMAND
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Patch Set 1:

(1 comment)

https://gerrit.osmocom.org/#/c/12830/1/src/libmsc/a_iface.c
File src/libmsc/a_iface.c:

https://gerrit.osmocom.org/#/c/12830/1/src/libmsc/a_iface.c@424
PS1, Line 424: vsub && vsub->sgs_fsm->state == SGS_UE_ST_ASSOCIATED
I don't recall all the SGs details anymore.  Is it guaranteed that the call was CSFB related if we are in that state?  What if we are in SGS associated and a phone might for whatever reasons (e.g. loss of 4G coverage) have returned to 2G/3G?  We'd have invalidated the state then already before?

I guess what I'd ideally be hoping for is that we somehow *know* that this particular call was established via CSFB, rather than relying on some "global" state of the subscriber.

Not super critical, just my 2 cents.



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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I6cfa4b3becdd0138d74e2e1eddd83a0b1568c1de
Gerrit-Change-Number: 12830
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder (1000002)
Gerrit-CC: Harald Welte <laforge at gnumonks.org>
Gerrit-Comment-Date: Mon, 04 Feb 2019 20:00:12 +0000
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