On 26/08/2025 11:29, Keith wrote:
I can't remember off the top of my head what the LUJ cause code is
that does this, but it is an issue.
LU Reject Cause #2 "IMSI Unknown in HLR"
See for example this description of the process (although this describes
the problem in reverse):
https://osmocom.org/projects/osmo-hlr/repository/osmo-hlr/revisions/6b5616fd36f1d88d174a3610a1936b853e9d0981
There's also a story of this happening at a CCC event one year where all
the event's Osmocom SIMs got shut down by a local MNO network. Not sure
if that is publicly documented somewhere. (it may be at least mentioned
in some talk that was recorded.)
BTW, You can add PLMNs to the FPLMN list with pysim, Again, not sure if
there is a simple howto out there on that. Anybody?