[Discuss-gnuradio] GSM not detecting station, USRP1, FA-SY1, WBX, DBS

[Paul Lambert]

Hello list,

I'm having a lot of trouble here while trying to make openBTS work with my USRP1
to play with GSMs.
First of all, a little description of my setup:
Software:
openbts-2.6.0Mamou
gnuradio v3.4.0git-130-g207a2ae7
UHD from git
OS: ubuntu 11.04

# sudo lsusrp
USRP 0 serial number 4c76a203
  RX d'board A: WBX NG RX
  RX d'board B: DBS Rx
  TX d'board A: WBX NG TX
  TX d'board B: <none>

/usr/local/share/gnuradio/examples/usrp/usrp_benchmark_usb.py
Max USB/USRP throughput = 32MB/sec

I'm using a FA-SY clock to get 52Mhz and I followed the guide in [1]
I didn't modify any of the code, since I'm using gnuradio 3.4. (But I
adapted my OpenBTS.config)
When I start openBTS I get the following output:
http://pastebin.com/raw.php?i=nKbG4j3z  (I pasted the whole output)

Here is the openBTS config I use:
http://pastebin.com/raw.php?i=aUQfYWGu
(This is the last I used, but I tried several other configs)

My phones cannot find the network, I'm trying with a Motorolla C123,
Nokia 3510i and Nokia E71. I'm not sure where I should search next, I
google'd a lot an read documentation, tried out the fixes described in
forums etc.
Strange behaviour (maybe normal, but not sure):
 "sudo usrp_siggen.py --sine
  Press Enter to quit: "
No more output...

I would be glad if somebody had an idea where I could look next.

With best regards,
Marc

[1]: http://gnuradio.org/redmine/wiki/1/OpenBTSClockModifications