23 Nov
2011
23 Nov
'11
3:16 p.m.
Hi all,
Just received my C123 (from http://shop.sysmocom.de/) with filter rework
and it works great.
I have one problem with the "burst*.dat" files when i do uplink sniffing,
basically there are no files produced and when they are produced most of
the time they are empty?
This doesn't happen when i do downlink sniffing. Is this a stupid question
or am I missing something...
cheers,
L.
24 Nov
24 Nov
11:52 a.m.
On 11/23/2011 03:16 PM, Lorik Sefaj wrote:
Hi all,
This doesn't happen when i do downlink sniffing.
Is this a stupid question or
am I missing something...
Hi,
I assume this is with the GPRS code? I had hoped someone who has actually done
this would respond (I never tried the GPRS sniffing code).
I can only offer generic debugging advice (that you might have already
considered):
- I assume you followed the advice to go from #if 1 to #if 0?
- Check if the uplink sniffing cmd set is scheduled. The cmd_set for
sniffing (sniff_tch_sched_set) is used in the layer1/mframe_sched.c
and the TCH_F_EVEN/ODD task is triggered by
l23_api.c:l1ctl_rx_dm_est_req (from what I see right now).
- Is l1s_sniff_resp called? The wiki mentions red burst ind messages
popping up somewhere.
holger
12:03 p.m.
Hi,
I assume this is with the GPRS code? I had hoped
someone who has actually done
this would respond (I never tried the GPRS sniffing code).
Ah yes, I forgot about this ...
I don't know what you run, but it's also completely possible that you
just don't see uplinks ... just because the filters are removed
doesn't mean you'll see as much UL traffic than DL traffic, the range
is still much more limited.
Cheers,
Sylvain
1:34 p.m.
Thanks. Yes I thought about the UL range at first and I think your
reply pretty much affirms my conclusion too.
I'm using the GPRS code (from #if 1 to #if 0) I will check the debugging
advice from Holger.
cheers,
L.
On Thu, Nov 24, 2011 at 12:03 PM, Sylvain Munaut <246tnt(a)gmail.com> wrote:
Hi,
I assume this is with the GPRS code? I had hoped
someone who has
actually done
this would respond (I never tried the GPRS
sniffing code).
Ah yes, I forgot about this ...
I don't know what you run, but it's also completely possible that you
just don't see uplinks ... just because the filters are removed
doesn't mean you'll see as much UL traffic than DL traffic, the range
is still much more limited.
Cheers,
Sylvain
26 Nov
26 Nov
9:36 p.m.
Hello List,
I I'm keen to know if TCH sniff features were added to OsmocomBB( as
Sylvain demonstrated during C27 chao conference)? does it capable to do the
voice channel sniffing as well? whether real time or in recorded.
Kind regards,
On Thu, Nov 24, 2011 at 11:03 AM, Sylvain Munaut <246tnt(a)gmail.com> wrote:
Hi,
I assume this is with the GPRS code? I had hoped
someone who has
actually done
this would respond (I never tried the GPRS
sniffing code).
Ah yes, I forgot about this ...
I don't know what you run, but it's also completely possible that you
just don't see uplinks ... just because the filters are removed
doesn't mean you'll see as much UL traffic than DL traffic, the range
is still much more limited.
Cheers,
Sylvain
9:42 p.m.
On 11/26/2011 09:36 PM, Marten Christophe wrote:
Hello List,
I I'm keen to know if TCH sniff features were added to OsmocomBB( as Sylvain
demonstrated during C27 chao conference)? does it capable to do the voice
channel sniffing as well? whether real time or in recorded.
Hi,
can you just let it go? Sylvain has clearly stated that the code he wrote to
make sniffing + decoding trivial will not be published. Why do you come back
with that? It is getting a bit freaky.
His dsp patch to get raw burst data has been always public[1]...
holger
[1]
http://cgit.osmocom.org/cgit/osmocom-bb/tree/src/target_dsp/calypso/dsp_sni…
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baseband-devel@lists.osmocom.org
5 comments
4 participants
participants (4)
-
Holger Hans Peter Freyther -
Lorik Sefaj -
Marten Christophe -
Sylvain Munaut