React to IMSI Attach but not PERIODIC

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Keith Whyte keith at rhizomatica.org
Mon May 28 07:36:59 UTC 2018



On 24/05/18 15:47, Neels Hofmeyr wrote:
> On Wed, May 23, 2018 at 10:27:38PM +0200, Keith Whyte wrote:
>> From quick observation on legacy openBSC, we just accept the PERIODIC
>> LUR for a "detached" MS and update the LAC in the HLR.
> Perodic LU applies to attached MS, not detached ones.
Yes.. but  "detached", according to who?
> Have you got the logic reversed, or is that a bug?
Here's what I did.
1) Power on MS, Let it IMSI Attach.
2) Mark the MS as detached in HLR (sqlite)
3) Wait for the PERIODIC LUR.

>
> And the legacy OpenBSC has no osmo-hlr, you're referring to the sqlite db?
Yes, of course.
>
> ~N




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