Omsobts -osmotrx communication problem

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Snehasish Kar snehasish.cse at LIVE.COM
Mon Jan 23 06:13:03 UTC 2017


Problem is usrp x310 doesnot support the gsmband, it works above 1.2GHz. Also if I still change the MCC and MNC I am not not able to find the network on the phone, and any clue on this error "check_rx_md_err: An internal receive buffer has filled", it comes in osmo-trx.

________________________________
From: Dhananjay kumar <dhananjay.cse at gmail.com>
Sent: Monday, January 23, 2017 11:37:38 AM
To: Snehasish Kar
Cc: nhofmeyr at sysmocom.de
Subject: Re: Omsobts -osmotrx communication problem

hi,

network country code 404
 mobile network code 31

Change it to

network country code 001
 mobile network code 01
 short name  TESTPLMN
 long name TESTPLMN

Try it in Band 850 .
900 and 1800 and widely used in India by commercial  operates.
Remove all neighbor cell list.


You are using 404 31 , it might match some real network, and you will not able to see your test network.

BR
Dhananjay

On Mon, Jan 23, 2017 at 11:20 AM, Snehasish Kar <snehasish.cse at live.com<mailto:snehasish.cse at live.com>> wrote:

Hi I have attached my config as requested, also in osmo-trx I am getting the following error "check_rx_md_err: An internal receive buffer has filled" and I am not able to view the network in my phone.  I am using usrp x310 and os UBUNTU.


BR

Snehasish

________________________________
From: Neels Hofmeyr <nhofmeyr at sysmocom.de<mailto:nhofmeyr at sysmocom.de>>
Sent: Saturday, January 21, 2017 4:35:06 AM
To: Snehasish Kar
Cc: openbsc at lists.osmocom.org<mailto:openbsc at lists.osmocom.org>
Subject: Re: Omsobts -osmotrx communication problem

On Fri, Jan 20, 2017 at 11:58:53AM +0000, Snehasish Kar wrote:
> Hi
>
> I have installed osmobts and osmotrx  with openbsc, to enable openbsc with usrp. But whenever I tried running the three applications, I gave the following error in osmobts. Please help me with it.

>
>
> <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid
> > <000b> trx_if.c:490 Tx burst length 0 invalid

If I remember correctly, osmo-bts-trx will at startup show a bunch of these and
then continue normally.

To clarify, you need to run 'osmo-trx', 'osmo-bts-trx' and 'osmo-nitb'.
We can't help further with this little information on your config.

~N


--
- Neels Hofmeyr <nhofmeyr at sysmocom.de<mailto:nhofmeyr at sysmocom.de>>          http://www.sysmocom.de/
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--
Thanks & Regards
Dhananjay
9686184214

Luck is what happens when preparation meets opportunity.
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