Dieter -
I don't know if that's valid by the spec or not, but it's part of a
pretty standard configuration in IMSI-catchers: CCCH+SDCCH4 +
6*SDCCH8 + TCH/F. That maximizes location updating capacity and
leaves one TCH/F for other ... mischief. Most of those IMSI-catchers
are based on commercial mini/nano-BTS equipment.
-- David
On Dec 3, 2009, at 8:26 AM, Dieter Spaar wrote:
Hello Paul,
On Wed, 02 Dec 2009 22:36:53 +0000, s4dd(a)losers.yore.ma wrote:
Any help you guys could give is much appreciated!
I think the problem is the "Invalid Channel Combination!!!"
error message. Try to change "phys_chan_config" of timeslot
1 from "SDCCH8" to "TCH/F". From my understanding of
verify_chan_comb() "SDCCH8" is not allowed on the same TRX that
already has "CCCH+SDCCH4" so I wonder why it is set in the
config file (this only applies to the BS11). Sorry, I don't
have a ready BS11 configuration at hand right now, so I can't
test it.
Best regards,
Dieter
--
Dieter Spaar, Germany
spaar(a)mirider.augusta.de
David A. Burgess
Kestrel Signal Processing, Inc.