Query - Running two ARFCN on UmTRX using OsmoBTS

Amber and Sarosh amber_sarosh at hotmail.com
Mon May 4 05:15:35 UTC 2015


Hi,
Thank you for your help Alexander.

We have configured 
our system to use both the channels of UmTRX on different ARFCNs of 
GSM900 band with OsmoNITB, OsmoTRX and OsmoBTS.We have a Fairwaves UmTRX version 2.2 with us. Can you please confirm 
if the two channels of a single UmTRX can be configured to operate on 
two different bands for example one channel on GSM900 and the other one 
on DCS1800?

Regards,
Amber & Sarosh

Regards,
Amber & Sarosh


From: alexander.chemeris at gmail.com
Date: Fri, 1 May 2015 23:37:25 -0400
Subject: Re: Query - Running two ARFCN on UmTRX using OsmoBTS
To: amber_sarosh at hotmail.com
CC: umtrx at lists.osmocom.org; andy.avtushenko at gmail.com

Amber & Sarosh,
We recommend using the following branches:osmo_trx: fairwaves/masterlibosmocore: master
libosmo-abis: fairwaves/masterlibsmpp34: master
osmo_bts: fairwaves/debianopenbsc: fairwaves/master
Let us know if you have any issues using them.
On Tue, Apr 28, 2015 at 1:24 AM, Amber and Sarosh <amber_sarosh at hotmail.com> wrote:




Hi,
Thankyou for your response.
For installation of osmo-bts we are following the instructions at http://openbsc.osmocom.org/trac/wiki/network_from_scratch . Kindly inform which branch should we use?

Regards,
Amber & Sarosh


> From: alexander.chemeris at gmail.com
> Date: Mon, 27 Apr 2015 15:25:08 -0400
> Subject: Re: Query - Running two ARFCN on UmTRX using OsmoBTS
> To: amber_sarosh at hotmail.com
> CC: umtrx at lists.osmocom.org; andy.avtushenko at gmail.com
> 
> Amber & Sarosh,
> 
> It looks like you're using a wrong version of osmo-bts. Whuch branch
> and commit are you using?
> 
> On Mon, Apr 27, 2015 at 5:39 AM, Amber and Sarosh
> <amber_sarosh at hotmail.com> wrote:
> > Hi
> > Thanks for your reply. We have tested the configurations that you mailed but
> > our setup still produces the following error message when osmobts is run;
> >
> > <0006> scheduler.c:212 Init scheduler for trx=0
> > <000a> trx_if.c:485 Open transceiver for trx=0
> > <000a> trx_if.c:496 Waiting for transceiver send clock
> > There is no such command.
> > Error occurred during reading below line:
> >   rxgain 12
> >
> > Unknown TRX 1. Aavialable TRX are: 0..0
> > Failed to parse the config file: '/root/.osmocom/osmo-bts.cfg'
> >
> > Any help in this regard is much appreciated. Thanks.
> >
> > Regards,
> > Amber & Sarosh
> >
> >
> > ________________________________
> > Date: Fri, 24 Apr 2015 08:54:35 -0800
> > Subject: Query - Running two ARFCN on UmTRX using OsmoBTS
> > From: andy.avtushenko at gmail.com
> > To: amber_sarosh at hotmail.com
> > CC: fairsupport at fairwaves.co
> >
> >
> > Hello Amber & Sarosh
> > You have to add these lines below into /etc/osmocom/openbsc.cfg right after
> > trx0 configuration
> > trx 1
> >    rf_locked 0
> >    arfcn 184 (set the right ARFCN for you here )
> >    nominal power 23
> >    max_power_red 0
> >    rsl e1 tei 0
> >     timeslot 0
> >      phys_chan_config TCH/F
> >     timeslot 1
> >      phys_chan_config TCH/F
> >     timeslot 2
> >      phys_chan_config TCH/F
> >     timeslot 3
> >      phys_chan_config TCH/F
> >     timeslot 4
> >      phys_chan_config TCH/F
> >     timeslot 5
> >      phys_chan_config TCH/F
> >     timeslot 6
> >      phys_chan_config TCH/F
> >     timeslot 7
> >      phys_chan_config TCH/F
> >
> > And add into etc/osmocom/osmo-bts.cfg
> >
> > trx 1
> >   rxgain 12
> >   power 0
> >
> > restart services: sudo sv restart osmo-trx osmo-bts osmo-nitb
> >
> > Regarding trx band dividing, theoretically it might possible but we haven't
> > tested that
> > --
> > Best regards,
> > Andy
> 
> 
> 
> -- 
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves, Inc.
> https://fairwaves.co
> 
> 
 		 	   		  


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


 		 	   		  
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