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Support #4621
openfeedback: osmo-bsc modifies the LAI in LU Accept messages, and the MM info data
Start date:
06/18/2020
Due date:
% Done:
0%
Spec Reference:
Description
looking at osmo_bsc_filter.c, I notice that we probably don't want any of this to remain in osmo-bsc:
http://git.osmocom.org/osmo-bsc/tree/src/osmo-bsc/osmo_bsc_filter.c#n110
- we are modifying the LAI in a Location Updating Accept message. I'm pretty sure we don't want to do this in osmo-bsc ever.
http://git.osmocom.org/osmo-bsc/tree/src/osmo-bsc/osmo_bsc_filter.c#n135
- we are modifying the MM info, see bsc_patch_mm_info()
http://git.osmocom.org/osmo-bsc/tree/src/osmo-bsc/osmo_bsc_filter.c#n32
I'm least sure about the timezone information that osmo-bsc overwrites in the MM info,
I dimly remember an explicit request to be able to run BSCs in different time zones...
Which parts of this can be dropped?
Updated by laforge almost 4 years ago
On Thu, Jun 18, 2020 at 04:36:53PM +0000, neels [REDMINE] wrote:
- we are modifying the LAI in a Location Updating Accept message. I'm pretty sure we don't want to do this in osmo-bsc ever.
http://git.osmocom.org/osmo-bsc/tree/src/osmo-bsc/osmo_bsc_filter.c#n135
can be removed.
- we are modifying the MM info, see bsc_patch_mm_info()
http://git.osmocom.org/osmo-bsc/tree/src/osmo-bsc/osmo_bsc_filter.c#n32
I'm least sure about the timezone information that osmo-bsc overwrites in the MM info,
I dimly remember an explicit request to be able to run BSCs in different time zones...
It makes sense in larger countries that span multiple timezones. You may not have a separate
MSC for every timezone. So unless it adds a lot of overhead/trouble, I would keep that one.
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