Here is a capture illustrating the problem. The first packet contains the
Attach Request with the IMSI decoded properly (001010000001012) while the
second contains a BSSGP DL-Unitdata with the decode being 001010000000121.
Rick
<<att.pcap>>
> -----Original Message-----
> From: LEGO [SMTP:luis.ontanon@xxxxxxxxx]
> Sent: Monday, February 28, 2005 12:31 PM
> To: Ethereal development
> Subject: Re: [Ethereal-dev] bssgp
>
> As far as I understand the IMSI in bsgpp should have the digits
> switched a-la ISUP (while actually it isn't) unfortunatelly I have no
> captures available to verify aany changes to the code, If you send me
> a small capture which shows the problem and what the correct output
> should be I could fix this in little time.
>
> Luis
>
> On Mon, 28 Feb 2005 08:08:49 -0800 (PST), Miklos Szurdi
> <szurdimiklos@xxxxxxxxx> wrote:
> > Hi
> >
> > I am a research student at Tech Univ of Budapest
> >
> > Miki
> > --- Pilz Rene <rene.pilz@xxxxxx> wrote:
> >
> > > Hi
> > >
> > > Miklos Szurdi wrote:
> > >
> > > >Hi
> > > >
> > > >in ethereal 10.7 IMSI was decoded correctly
> > > >in ethereal 10.8 and 10.9 it makes a permutation of
> > > >the numbers in the IMSI
> > > >
> > > >example:
> > > >
> > > >the good imsi embedded in
> > > >...
> > > >GSM A-I/F DTAP - Attach Request
> > > >...
> > > >Mobile Identity - IMSI (466990001895310)
> > > >...
> > > >
> > > >the wrong(ly decoded) imsi embedded in
> > > >...
> > > >Base Station Subsystem GPRS Protocol
> > > >...
> > > >IMSI: 466990010983501
> > > >...
> > > >
> > > >the difference is clear:
> > > >good: 4669900 01 89 53 10
> > > >bad: 4669900 10 98 35 01
> > > >somehow it swaps those values...
> > > >
> > > >
> > > >
> > > It seems, that they have forgotten to swap the
> > > bytes.
> > >
> > > >if it was a known issue and has a solution please
> > > let
> > > >me know...
> > > >
> > > >thanks
> > > >miki
> > > >
> > > >
> > > >
> > > I have a small question to you: For which company
> > > are you working?
> > >
> > > >
> > > >
> > > >
> > > Regards
> > >
> > > rene
> > >
> > > >
> > > >__________________________________
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> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > Dipl-Ing (FH) MSc. C.E René Pilz
> > > ftw. Telekommunications Research Center Vienna
> > > http://www.ftw.at
> > > Tech Gate Vienna, Donaucitystraße 1, A-1220 Wien
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