On Sun, 30 Jan 2011 19:32:04 +0100, Steve Markgraf wrote:
Hi again,
On 30.01.2011 19:05, Steve Markgraf wrote:
> In gsm 04.08 9.1.22.3 it says "The
Mobile Identity 1 and 2 IEs
> shall not
> refer to IMEI.". So a standard compliant network should never do
> that.
"The reason why you see paging by IMSI in
real-world GSM networks"
Sorry, I confused IMEI/IMSI. Forget about my last message, although
Haralds blogpost may still be interesting in the context of this
thread.
No, you were right about that, second part of my post was about imsis
on air.
I already had read Haralds post but I'm not fully convinced of all of
his
explainations. At least not on modern state-of-the-art core networks.
Too less ram or volatile storage on restarting VLRs, is that really
still an
issue there?
The third point, that expired tmsis on unreachable phones with a
fallback on
imsi paging as the main cause sounds much more convincing to me.
But as David pointed out, 10-25% imsi paging is a lot, even about
constant
2-5% as I observed are much for a location area or whole msc area.
Did anyone do some research on that?
Regards,
Mad