Working of ccch_scan and capturing the SDCCH.

Akib Sayyed akibsayyed at gmail.com
Sun Jul 22 07:45:33 UTC 2012


On Sat, Jul 21, 2012 at 2:27 PM, Luca Melette <luca at srlabs.de> wrote:

> On Sat, 21 Jul 2012 10:39:54 +0200
> Sylvain Munaut <246tnt at gmail.com> wrote:
>
> Hi list,
>
> > > so to take complete advantage of sniffing 4 time slots we need to
> modify
> > > only a ccch_scan app or some more modification also needed  ??
> > > and what is someone need to sniff either uplink or downlink??
>
> I guess I have to do some maintenance to my patch...
> it's a bit old, and it must be merged with last master.
>
> how luca when can we expect this patch cause. because i am really hasty to
try that out.

> The downlink/uplink is hard coded, so you need to compile
> the firmware once for down and once for up.
> The host software also needs some patching. Normally you
> would jump to the channel specified in the assignment,
> but here you need two ccch_scan versions: one for the
> "main" timeslot and one that jumps at timeslot + 1, if
> you need to capture all the 8 timeslots.
>
> did you mean 4 uplink and 4 downlink  here??
i didnt get point you made for 2 ccch_scan could you please explain

> I will send some update when I have time :)
>
> Cheers,
>
> LM
>
>
>
>


-- 
Akib Sayyed
Matrix-Shell
akibsayyed at gmail.com
akibsayyed at matrixshell.com
Mob:- +91-966-514-2243
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20120722/4f315a6e/attachment.html>


More information about the baseband-devel mailing list