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Re: [Openbts-discuss] Changing from multi band Frequency to 1900
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From: Michael I. <mic...@ra...> - 2015-01-28 11:55:28
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Hi Lloyd, (please keep responses on the list so everyone can help) You can view those suspected db values by using commands like this: $ sudo sqlite3 /etc/OpenBTS/OpenBTS.db "select KEYSTRING,VALUESTRING from CONFIG where KEYSTRING like ‘%GSM.Radio%’"; That should show you the value for the GSM.Radio.C0 ARFCN and GSM.Radio.Band. To see which ARFCNs are valid for which bands, check this table: - http://en.wikipedia.org/wiki/Absolute_radio-frequency_channel_number#ARFCN_Table_for_common_GSM_systems If you see that your band does not match the chose C0 ARFCN, select a new one by manipulating the raw db value like so (example sets band to 900): $ sudo sqlite3 /etc/OpenBTS/OpenBTS.db "insert or replace into CONFIG (VALUESTRING,KEYSTRING) values (‘900’,’GSM.Radio.Band')”; My first guess is a C0/Band mismatch but if OpenBTS still fails to start, there may be another problem. Have you checked the logs in /var/log/OpenBTS.log? Hope that helps, -Michael > El 28/1/2015, a las 12:39, llo...@gm... escribió: > > Hi Mike, > > Can you direct on how to fix this. > > Regards, > > Lloyd C. Harbor > Operations > Acloy Nigeria Limited > > M: +234-809-8910369 > S: lloydharbor > E: llo...@ac... > > > > > Powered by BlackBerry 10 smartphone. > Original Message > From: Michael Iedema > Sent: Wednesday, 28 January 2015 12:20 > To: Ralph A. Schmid, dk5ras > Cc: Lloyd C. Harbor; OpenBTS Discuss > Subject: Re: [Openbts-discuss] Changing from multi band Frequency to 1900 > > Anything newer than 4.0 will auto-correct the C0+Band mismatch on boot, preventing the former restart loop behavior. Once this is healed, an upgrade is probably worth it. Lots of small stuff like this has been ironed out. > >> El 28/1/2015, a las 9:01, Ralph A. Schmid, dk5ras <ra...@sc...> escribió: >> >> As Harvind already mentioned, maybe ARFCN and Band do not match. I do not know anything about the dev kit, but you should be able to find a way editing the sql3 database manually, change the C0 and Band values to something that works, and maybe all is OK again. >> >> Ralph. >> >>> -----Original Message----- >>> From: Lloyd C. Harbor [mailto:llo...@ac...] >>> Sent: Wednesday, January 28, 2015 3:31 AM >>> To: Lloyd C. Harbor >>> Cc: ope...@li...; Ralph A. Schmid, dk5ras >>> Subject: Re: Fw: [Openbts-discuss] Changing from multi band Frequency to >>> 1900 >>> >>> 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 >> >> >> ------------------------------------------------------------------------------ >> Dive into the World of Parallel Programming. 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