Query - Running two ARFCN on UmTRX using OsmoBTS

Alexander Chemeris alexander.chemeris at gmail.com
Thu May 21 19:22:30 UTC 2015


Jijo,

In osmo-bts config you always specify "bts 0". If you need several BTS
on the same PC, use different config files for them. You can pass a
config file name with a command line option to osmo-bts.

All BTS must have different ipa unit-id - that's how they are
differentiated in osmo-nitb (openbsc) configuration.

On Thu, May 21, 2015 at 11:48 AM, Andy Avtushenko
<andy.avtushenko at gmail.com> wrote:
> Hi Jijo.
> Could you please send openbsc.cfg
> also you can use "locate" to find a logs.
> run something like
> locate osmo-trx either locate current
>
>
> 2015-05-21 4:47 GMT-08:00 Joe Ge <jijo123789 at gmail.com>:
>>
>> Hi Andy,
>>
>> That setup seemed to have worked for me once I rebuilt it again.
>> But I'm still facing the same error as stated by Amber & Sarosh
>> The 2nd BTS refuses to take the configuration of "bts 1". I have tried to
>> run the 2nd BTS on the same machine as well as from a networked machine.
>>
>>
>> ------------------------------------------------------------------------------------------
>> root at nistws4:/home/nist-ws4# osmobts-trx -c /root/.osmocom/ho_bts1.cfg
>> ((*))
>>   |
>>  / \ OsmoBTS
>> Using MAC address of eth0: '40:a8:f0:63:c7:b6'
>> <0006> scheduler.c:212 Init scheduler for trx=0
>> <000b> trx_if.c:493 Open transceiver for trx=0
>> <000b> trx_if.c:504 Waiting for transceiver send clock
>> There is no such command.
>> Error occurred during reading below line:
>>  band DCS1800
>>
>> % Unknown BTS number 1 (num 1)
>> Failed to parse the config file: '/root/.osmocom/ho_bts1.cfg'
>>
>> ------------------------------------------------------------------------------------------
>>
>>
>>
>> Configuration file for ho_bts1.cfg is as follows:
>>
>> ------------------------------------------------------------------------------------------
>> bts 1
>>  band DCS1800
>>  ipa unit-id 1802 0
>>  oml remote-ip 172.30.1.10
>>  rtp bind-ip 172.30.1.10
>>  rtp jitter-buffer 0
>>  paging lifetime 0
>>  gsmtap-sapi bcch
>>  gsmtap-sapi ccch
>>  gsmtap-sapi rach
>>  gsmtap-sapi agch
>>  gsmtap-sapi pch
>>  gsmtap-sapi sdcch
>>  gsmtap-sapi pacch
>>  gsmtap-sapi pdtch
>>  gsmtap-sapi sacch
>>  fn-advance 20
>>  ms-power-loop -60
>>  timing-advance-loop
>>  trx 0
>>   rxgain 0
>>   power 0
>>
>> ------------------------------------------------------------------------------------------
>>
>>
>> Can you please suggest some alternatives?
>>
>> Thanks and Regards,
>> Jijo
>>
>> On Thu, May 21, 2015 at 12:06 PM, Joe Ge <jijo123789 at gmail.com> wrote:
>>>
>>> Hi Andy,
>>>
>>> There are no logs in the location you specified.
>>> Does it need to be activated somehow(debug mode)???
>>> What might be the problem?
>>>
>>> Regards,
>>> Jijo
>>>
>>> On Wed, May 20, 2015 at 9:29 PM, Andy Avtushenko
>>> <andy.avtushenko at gmail.com> wrote:
>>>>
>>>> Hello Jijo
>>>> Could you please provide us a osmo-trx logs
>>>> located in var/logs/osmo-trx/current
>>>> thanks
>>>>
>>>> 2015-05-20 4:34 GMT-08:00 Jijo <jijo123789 at gmail.com>:
>>>>>
>>>>> Hi Alexander,
>>>>>
>>>>> I'm working on a similar setup as Amber & Sarosh, till about recently I
>>>>> was
>>>>> facing the same error as these guys (where the config file was not
>>>>> parsing
>>>>> the trx 1 and later sections) when I stumbled upon your response.
>>>>> Now I've installed the same versions as suggested by you :
>>>>> osmo_trx: fairwaves/master
>>>>> libosmocore: master
>>>>> libosmo-abis: fairwaves/master
>>>>> libsmpp34: master
>>>>> osmo_bts: fairwaves/debian
>>>>> openbsc: fairwaves/master
>>>>>
>>>>> But somehow my osmobts-trx is not recognizing osmo-trx
>>>>>
>>>>> --------------------------------------------------------
>>>>> <0001> oml.c:419 L3=0x94eb07e, VAL=0x94eb0ad, DIF=47
>>>>> <0001> oml.c:790 ADM state already was Unlocked
>>>>> <0001> oml.c:790 ADM state already was Unlocked
>>>>> <0001> oml.c:790 ADM state already was Unlocked
>>>>> <0001> oml.c:790 ADM state already was Unlocked
>>>>> <000b> trx_if.c:187 No response from transceiver for trx=0
>>>>> <000b> trx_if.c:187 No response from transceiver for trx=0
>>>>> <000b> trx_if.c:187 No response from transceiver for trx=0
>>>>> <000b> trx_if.c:187 No response from transceiver for trx=0
>>>>> --------------------------------------------------------
>>>>>
>>>>> I'm using UmDESK for this setup.
>>>>> PS- I built osmo-bts with(./configure --enable-trx). I hope that was
>>>>> correct
>>>>> for UmDESK
>>>>> Can you help with this regard?
>>>>>
>>>>> Thanks and Regards,
>>>>> Jijo
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Best regards,
>>>> Andy
>>>
>>>
>>
>
>
>
> --
> Best regards,
> Andy



-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves, Inc.
https://fairwaves.co





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