Re: [Openbts-discuss] First installation problems

[Balthasar I. <ba...@in...>]

Hi Pierre,

many thanks for the suggestion, I'll try that - not sure how I ended
up using that as my UHD install was done via pybombs for the initial
gnuradio setup of the machine. I'm afraid to make a mess of that... is
there a pybombs way of installing a released UHD version you're aware
of?

The hardware setup is as follows: Macbook Pro (quad i7, 2015 model,
1TB SSD) running Ubuntu 14.04 (natively, no VM). Tried headless, with
head, with VNC server only... makes no difference. TX/RX antenna is
the ettus vert400 whip (not ideal for 960 MHz, but for a same room
testing setup the losses shouldn't make that much of a difference). In
the RX2 port is a short omni stick. Both antennas see the surrounding
mobile tower signals just fine when using e.g. gqrx.


On 24 January 2016 at 18:16, Pierre Baudry <agm...@ag...> wrote:
> Hi Balthasar,
>
>
> I see that you use UHD master.
> Consider using a released UHD version, even the latest one, such as
> release_003_009_002 ; as it is known to work with OpenBTS
> To do this, uninstall the UHD you built (ensure there is no remaining
> library installed /usr/local/lib/libuhd*), checkout a released
> version, build and install it. Then, rebuild OpenBTS.
> You might need to unplug and plug back your SDR hardware to be able to
> execute uhd_usrp_probe again, as the installed FPGA image and firmware
> can mismatch your UHD setup.
>
> Then, can you share some information about your hardware setup ? What
> kind of antennas are used, how are they placed ?
>
> 2016-01-23 22:10 GMT+01:00 Balthasar Indermuehle <ba...@in...>:
>> Hi guys
>>
>> I'm a bit at a loss here... Still no luck registering the phone on my
>> network. The O'Reilly book doesn't provide a lot of debugging help for my
>> problem, do any of you have some pointers / ideas / resources that could
>> assist me in debugging this?
>>
>> The most useful part in the book is that sentence likening RF engineering to
>> black magic, and stating that by the time we're done reading it we will be
>> surprised that it works at all. I'm still hopeful to get there eventually...
>>
>> Cheers
>>
>> Balt
>>
>>
>> On Saturday, 23 January 2016, Balthasar Indermuehle <ba...@in...> wrote:
>>>
>>> I also reset the MCC and MNC codes to 001/01, which makes the iPhone see
>>> the network as Test PLMN 1-1
>>>
>>> Do I need to change the colour code?
>>>
>>> Still no luck and getting this false SOS Only indication when connected
>>> with no welcome or rejection SMS being sent. Trying to send an SMS to 411
>>> results in a send error.
>>>
>>> On Saturday, 23 January 2016, Balthasar Indermuehle <ba...@in...>
>>> wrote:
>>>>
>>>> Yes, I even rebooted the computer.
>>>>
>>>> On Saturday, 23 January 2016, at ion Pandeya <nee...@et...>
>>>> wrote:
>>>>>
>>>>> After enabling open registration, you need to re-start OpenBTS. Did you
>>>>> already do this?
>>>>>
>>>>>
>>>>>
>>>>> On 22 January 2016 at 03:40, Balthasar Indermuehle <ba...@in...>
>>>>> wrote:
>>>>>>
>>>>>> Yes I think so. Am I missing anything?
>>>>>>
>>>>>> OpenBTS> config Control.LUR.Open
>>>>>> Control.LUR.OpenRegistration .*
>>>>>> Control.LUR.OpenRegistration.Message You're in a radio quiet zone. Turn
>>>>>> off
>>>>>> Control.LUR.OpenRegistration.Reject (disabled)     [default]
>>>>>> Control.LUR.OpenRegistration.ShortCode 101     [default]
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 22 January 2016 at 20:55, Ralph A. Schmid, dk5ras <ra...@sc...>
>>>>>> wrote:
>>>>>> > Did you enable
>>>>>> open registration, to allow all phones logging on without
>>>>>> > first manually registering their IMSI?
>>>>>> >
>>>>>> > Ralph.
>>>>>> >
>>>>>> >> -----Original Message-----
>>>>>> >> From: Balthasar Indermuehle [mailto:ba...@in...]
>>>>>> >> Sent: Friday, January 22, 2016 7:51 AM
>>>>>> >> To: Tom Tsou
>>>>>> >> Cc: OpenBTS Discuss
>>>>>> >> Subject: Re: [Openbts-discuss] First installation problems
>>>>>> >>
>>>>>> >> Back at the office now, and it seems to transmit the cell
>>>>>> >> information just
>>>>>> > fine.
>>>>>> >> I can see and decode the OpenBTS signal with the other B200 running
>>>>>> >> airspy/gsmprobe, it reports the correct MCC/MNC/LAC/CID that I've
>>>>>> >> set via
>>>>>> >> the OpenBTSCLI interface.
>>>>>> >>
>>>>>> >> With the iPhone I can see and manually select my network. However,
>>>>>> >> when I
>>>>>> >> select it, the iPhone 5 displays first No Service for 10-20 seconds,
>>>>>> >> then
>>>>>> > SOS
>>>>>> >> Only, and stays on SOS Only with my network selected (which would be
>>>>>> >> OK
>>>>>> >> as the IMSI is not yet registered on that network).
>>>>>> >> Starting the iPhone engineering console never completes (not sure if
>>>>>> > that's
>>>>>> >> by design, i.e. you need to be a subscriber to get the network info,
>>>>>> >> probably).
>>>>>> >>
>>>>>> >> On the OpenBTS side nothing seems to happen at all. stats shows no
>>>>>> >> count
>>>>>> >> increase on anything other than the OpenBTSCLI commands. The power,
>>>>>> >> gain
>>>>>> >> and noise all seem to be in OK ranges. Looking at the spectrum I
>>>>>> >> selected
>>>>>> > it is
>>>>>> >> clean before the access point is started (see spectrum plot here:
>>>>>> >> https://cloud.inside.net/index.php/s/k4zQRGTcGxzrjsk, ARFCN 1 is at
>>>>>> >> 935.2 MHz, left most peak in the plot. At the bottom of the
>>>>>> >> waterfall you
>>>>>> > can
>>>>>> >> see the clean spectrum before I switched it on, there's nothing else
>>>>>> > there).
>>>>>> >>
>>>>>> >> OpenBTS> power
>>>>>> >> current downlink power -20 dB wrt full scale
>>>>>> >>
>>>>>> >> OpenBTS> rxgain
>>>>>> >> current RX gain is 10 dB
>>>>>> >>
>>>>>> >> OpenBTS> noise
>>>>>> >> noise RSSI is -79 dB wrt full scale
>>>>>> >> MS RSSI target is -50 dB wrt full scale
>>>>>> >> INFO: the current noise level is acceptable.
>>>>>> >>
>>>>>> >> tmsis displays nothing. About once every 30 odd seconds, this log
>>>>>> >> entry is
>>>>>> >> made in syslog:
>>>>>> >> Jan 22 17:34:49 x transceiver: NOTICE 8449:9083
>>>>>> >> 2016-01-22T17:34:49.7
>>>>>> >> Transceiver.cpp:192:pushRadioVector: dumping STALE burst in
>>>>>> >> TRX->USRP
>>>>>> >> interface
>>>>>> >>
>>>>>> >> Not sure if that says anything.
>>>>>> >>
>>>>>> >> What else can I check?
>>>>>> >>
>>>>>> >>
>>>>>> >> On 22 January 2016 at 12:41, Balthasar Indermuehle <ba...@in...>
>>>>>> >> wrote:
>>>>>> >> > Many thanks for your help Tom! I think the patch did the trick.
>>>>>> >> >
>>>>>> >> > I can now run the OpenBTSCLI and set up the network, I can see the
>>>>>> >> > B200 putting out power at the right frequencies (benefits of
>>>>>> >> > having
>>>>>> >> > two I guess!).
>>>>>> >> >
>>>>>> >> > On 22 January 2016 at 11:17, Tom Tsou <tom...@et...> wrote:
>>>>>> >> >> On Thu, Jan 21, 2016 at 4:01 PM, Balthasar Indermuehle
>>>>>> >> <ba...@in...> wrote:
>>>>>> >> >>> Jan 22 10:56:33 x openbts: EMERG 3594:3603 2016-01-22T10:56:33.5
>>>>>> >> >>> OpenBTS.cpp:185:startTransceiver: Transceiver quit with status
>>>>>> >> >>> 32512.
>>>>>> >> >>> Exiting.
>>>>>> >> >>
>>>>>> >> >> There is no way to pass device arguments into OpenBTS to pass
>>>>>> >> >> down to
>>>>>> >> >> transceiver.
>>>>>> >> >>
>>>>>> >> >> I would disable the OpenBTS transceiver start and run the
>>>>>> >> >> transceiver
>>>>>> >> >> manually from the command line with the device arguments.
>>>>>> >> >>
>>>>>> >> >>   -TT
>>>>>> >>
>>>>>> >>
>>>>>> >
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