Re: [Openbts-discuss] Fw: Changing from multi band Frequency to 1900

[Lloyd C. H. <llo...@ac...>]

Hi Ralph,

I used devconfig GSM.Radio.Band to change my Range Devkit Freq to 1900.
And now i am having big problem accessing my KIT with CLI.
if i log int OpenBTS and CLI, if i try to use the basic commands it will 
return error, check below and help me with the solution. Or if i will 
need to build again.


ubuntu@ubuntu:~$ sudo ifconfig eth0 192.168.0.99 netmask 255.255.252.0
ubuntu@ubuntu:~$ ssh openbts@192.168.0.22
openbts@192.168.0.22's password:
Linux ubuntu 2.6.32-31-generic #61-Ubuntu SMP Fri Apr 8 18:24:35 UTC 
2011 i686 GNU/Linux
Ubuntu 10.04.2 LTS

Welcome to Ubuntu!
  * Documentation:  https://help.ubuntu.com/

158 packages can be updated.
123 updates are security updates.

New release 'precise' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Tue Jan 27 17:58:26 2015 from 192.168.0.99
openbts@ubuntu:~$ sudo /OpenBTS/OpenBTSCLI
[sudo] password for openbts:
OpenBTS Commnd Line Interface (CLI) utility
Copyright 2012, 2013 Range Networks, Inc.
Licensed under GPLv2.
Includes libreadline, GPLv2.
command socket path is /var/run/OpenBTS/command
response socket bound to /tmp/OpenBTS.console.5925.54c8427f
Remote Interface Ready.
Type:
  "help" to see commands,
  "version" for version information,
  "notices" for licensing information.
  "quit" to exit console interface
OpenBTS> audit
sending datagram: No such file or directory
Is the remote application running?
OpenBTS>

























































On 2014-04-06 10:53, Lloyd C. Harbor wrote:
> Ralph,
> 
> I will work on it and update you with the result. As we have a
> demonstration in Malawi in May.
> Thank you so much.
> 
> Sent from my BlackBerry 10 smartphone.
> 
> FROM: Ralph A. Schmid, dk5ras
> SENT: Sunday, 6 April 2014 10:37 AM
> TO: 'Lloyd C. Harbor '; ope...@li...
> SUBJECT: RE: [Openbts-discuss] Changing from multi band Frequency to
> 1900
> 
> OK, I understand, in those areas I have no idea about the frequency
> assignments.
> 
> Sounds a bit strange, the only issue among commercial networks is a
> frequency error, but when you can find and log on the BTS, then this
> is not the problem. Did you check the ARCN if it was free? Do you have
> some test equipment at hand, to watch the spectrum before going on
> air? This way you could chose a good ARFCN before starting the
> demonstrations.
> 
> Switching the OpenBTS software to GSM1900 is quite easy, select a
> ARFCN that fits the channel numbering scheme, then “config
> GSM.Radio.Band 1900”. I don’t know if your dev kit allows all
> bands, there may be some filters fitted, limiting to one band.
> 
> Ralph.
> 
> FROM: Lloyd C. Harbor [mailto:llo...@ac...]
> SENT: Sunday, 6 April, 2014 10:08
> TO: Ralph A. Schmid, dk5ras
> SUBJECT: Re: [Openbts-discuss] Changing from multi band Frequency to
> 1900
> 
> Hi Ralph,
> 
> I am currently in Nigeria. I have experienced this issue in Ghana,
> Gambia, Liberia, in fact in over seven countries.
> 
> Initially I thought maybe the kit is faulty, but checking all the
> Alerts, all seem ok. Particularly if the kit is used in a rural
> setting it works ok.
> 
> As a company that is into rural African telephony projects, it turns
> out embarrassing if the kit fails during a demonstration.
> 
> If there is any additional check you can recommend, pls do because we
> won't like our systems to fail after deployment in rural African
> villages.
> 
> Lloyd C. Harbor
> Operations - Director
> Acloy Nigeria Limited
> 
> M: +234-809-8910369
> S: lloydharbor
> E: llo...@ac...
> 
> FROM: Ralph A. Schmid, dk5ras
> 
> SENT: Sunday, 6 April 2014 8:42 AM
> 
> TO: llo...@gm...; 'Michael Iedema'
> 
> CC: ope...@li...
> 
> SUBJECT: Re: [Openbts-discuss] Changing from multi band Frequency to
> 1900
> 
> In what country are you located? Many countries have some unused
> ARFCNs, in some European countries I have found the upper end of
> GSM1800 unused, and in fact my German test license also uses this
> frequency range. Never had problems, regardless of commercial cell
> density. Using GSM in the 1900 MHz band may interfere with UMTS 2100
> uplink, and still with GSM1800…
> 
> Ralph.
> 
> FROM: llo...@gm... [mailto:llo...@gm...]
> SENT: Sunday, 6 April, 2014 08:38
> TO: Michael Iedema
> CC: ope...@li...
> SUBJECT: [Openbts-discuss] Changing from multi band Frequency to 1900
> 
> Hi,
> 
> Please can someone help me on how to change my Range Multi band
> development kit to only operate on 1900.
> 
> My ‎kit becomes erratic when I try to use it for demonstration
> within areas where there are many commercial cell sites.
> 
> The MS will connect to the kit but calls will not go through, but when
> the kit is taken to areas with few cell site, it will work fine.
> 
> However all GSM frequency in‎ my country is on 1800, hence setting
> the kit on 1900 I think may fix this issue.
> 
> Regards,
> 
> Lloyd