Hi Amber & Sarosh,
UmTRX itself can with with both channels in different bands.
That said, this is not currently implemented in OsmoBTS/OsmoNITB - you can see that the band is specified for a BTS as a whole. Patches to add this feature are very welcome.
On Mon, May 4, 2015 at 1:15 AM, Amber and Sarosh amber_sarosh@hotmail.com wrote:
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@gmail.com Date: Fri, 1 May 2015 23:37:25 -0400
Subject: Re: Query - Running two ARFCN on UmTRX using OsmoBTS To: amber_sarosh@hotmail.com CC: umtrx@lists.osmocom.org; andy.avtushenko@gmail.com
Amber & Sarosh,
We recommend using the following branches: osmo_trx: fairwaves/master libosmocore: master libosmo-abis: fairwaves/master libsmpp34: master osmo_bts: fairwaves/debian openbsc: 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@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@gmail.com Date: Mon, 27 Apr 2015 15:25:08 -0400 Subject: Re: Query - Running two ARFCN on UmTRX using OsmoBTS To: amber_sarosh@hotmail.com CC: umtrx@lists.osmocom.org; andy.avtushenko@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@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@gmail.com To: amber_sarosh@hotmail.com CC: fairsupport@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