January 2010 - OpenBSC - lists.osmocom.org

[PATCH 0/1] Add bport0/1 support for bs11_config
by Daniel Willmann 14 Dec '10

14 Dec '10

Hello, second try to add support to bs11_config for bport0/1 configuration. This time with enum abis_bs11_line_cfg. It seems sometimes creating bport1 fails, even LMT shows create obj greyed out. Don't know why yet. Regards, Daniel Willmann Daniel Willmann (1): Add {create,delete}-bport1 and bport0-{star,multidrop} to bs11-config openbsc/include/openbsc/abis_nm.h | 10 +++++++++- openbsc/src/abis_nm.c | 31 +++++++++++++++++++++++++++++-- openbsc/src/bs11_config.c | 26 ++++++++++++++++++++++++++ 3 files changed, 64 insertions(+), 3 deletions(-)

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RSL "Channel Release" Sequence
by Holger Freyther 04 Feb '10

04 Feb '10

Hi, I'm currently implementing Early Assignment in the On Waves branch and as part of this I will have to take care of RSL channel releases as well. Someone else was pointing this out as well but I could not find the email. Our channel release is a bit sloppy and I will fix it and start using T3111 and T3109 in the rsl code for doing so. In the "normal" case (bsc on the left, bts on the right): RSL Channel Release --> <- RSL Channel Release Ack <- Release Indication SAPI=0 RSL Channel Release -> <- RSL Channel Release Ack In the "abnormal" case: <- Error Indication RSL Channel Release -> <- RSL Channel Release Ack <- Release Indication SAPI=0 RSL Channel Release -> <- RSL Channel Release Ack I'm going to change that into the following way. "normal" case: 1.) Release the established SAPIs 2.) After their ACKs release the Channel Have all this guarded by T3109 (or whatever is more appropriate) "abnormal" case: 1.) Start T3109 2.) Then do the normal case. During the shutdown sequence I need to make sure that we are not allocating the channel again. I'm thinking of either using the chan mode Harald was introducing while doing the hand over work, or just a "locked" flag to not assign the channel. I hope to be done with this by tomorrow or the day after, anyone has comments or ideas on how to approach this? z.

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USSD traces from live networks needed
by Alexander Chemeris 27 Jan '10

27 Jan '10

Hi all, I'm cross-posting this to both OpenBTS and OpenBSC mailing lists in a hope to get wider audience. Sorry if you get this message twice. Ivan and I are working on USSD support for OpenBTS now. We've got all our test phones working except old Siemens A52 (newer A65 is ok). When we request more information from the phone in order to create menu-like experience, this phone deny processing any further USSD with "NOT EXECUTED" error, while still keeping L3 channel open. This looks quite much like a bug in the phone, but also seems we have a problem in our code too - I tested it with my working SIM card and my normal operator USSD menu and it works. So I kindly ask everyone who have Nokia 3310 with MBUS cable or any other GSM sniffer and have access to live network with working USSD to help us with gathering some real-network data. Please: 1) Call some simple USSD request, which just return a single piece of data. Like "Show my balance" 2) Call some menu-like USSD request and go through several levels of it. On our network we have a kind of "Self-care service" through USSD which works that way. 3) If you know how to summon network-originated USSD request or notification - we will appreciate if you include this too. I have never seen this on my home network, though. 4) Send me your trace. Thanks! -- Regards, Alexander Chemeris.

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Patch/Driver for Sangoma E1 interface ?
by Carcellelist 27 Jan '10

27 Jan '10

Hi there, Has anyone been working on using OpenBSC with a Sangoma E1 card connected to the BTS ? I guess they would be some patches to add to the generic driver to have it fully working and recognized within the OpenBSC framework ? The last thread I saw related to Sangoma was from Oystein : http://lists.gnumonks.org/pipermail/openbsc/2009-August/000821.html Cheers, Xavier.

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adding an input to openbsc
by K2 26 Jan '10

26 Jan '10

Hi What needs to be changed in openbsc in order to add a new input ? I'm currently developing a GAN protocol stack, and would like to add it to openbsc so it could deal with the DTAP msg coming from GAN regards, -- k2

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maybe there is an select problem
by Andreas.Eversberg 23 Jan '10

23 Jan '10

hi, while porting the select.c to LCR, i found the problem: the unix select function returns a set of file descriptors to be handled. the result-loop (the loop after the select()) is called again, if more than one descriptor is removed by the callback funtion. this may lead to a another call to the callback function, because the bits of the FD_SETs do not change and still set. i think we must clear these bits, if they are handled, so the handler will not be called twice in case of a "restart" of that loop. regards, andreas

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Re: phone without encryption
by Dieter Spaar 21 Jan '10

21 Jan '10

Hello Andreas, On Wed, 20 Jan 2010 09:30:17 +0100, "Andreas.Eversberg" <Andreas.Eversberg(a)versatel.de> wrote: > > some stupid question: if a phone does not support any encryption, is it > possible to use it on an official GSM network? (authentication works, of > course) if so, what phone might it be? I did a quick check, at least Vodafone and T-Mobile here in Germany reject the Location Update Request with "Network Failure" (0x11) if they get a classmark without any encryption available. The registration works with the same phone if the classmark indicates that encryption support is available. The test was done with a phone where I can modify the classmark data. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

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phone without encryption
by Andreas.Eversberg 20 Jan '10

20 Jan '10

hi, some stupid question: if a phone does not support any encryption, is it possible to use it on an official GSM network? (authentication works, of course) if so, what phone might it be? regards andreas Mit freundlichen Grüßen, .-. /'v'\ (/ \) ------------------------------------------------------------------"-"- |_| i.A. Andreas Eversberg Network Operations / 2nd Level Data - KC Internet Versatel Nord GmbH Nordstr. 2 D-24937 Flensburg Fon: +49-461-9099749 | Fax: +49-461-909960749 andreas.eversberg@versatel.de@versatel.de | www.versatel.de Sitz der Gesellschaft: Flensburg, Registergericht: Flensburg, HRB 3395 FL Geschäftsführer: Dr. Hai Cheng, Dr. Max Padberg, Joachim Bellinghoven

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parsing config file problem
by Nordin CrazyHacker 13 Jan '10

13 Jan '10

Hello list, I have a nanobts1800 and installed openbsc on Debian yesterday (from git). After building the project and configured the bts on the network, I executed bsc_hack with -c openbsc.cfg.nanobts. But it failed to execute with the following error: <0005> bsc_init.c:860 Failed to parse the config file: 'openbsc.cfg.nanobts' I haven't modified the config file, I haven't modified anything at all in openbsc. Any idea? Thanks.

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Commit [39315c4] breaks BTS configuration
by Daniel Willmann 12 Jan '10

12 Jan '10

Hello, the commit "[OML] parse attributes depending on BTS type" seems to break bsc_hack completely since it's no longer possible to add a new BTS. This happens because the VTY config sytem first tries to allocate a BTS of type UNKNOWN and later changes that type when the type statement is encountered. I have commited a patch in daniel/fixes that registers a BTS of type unknown so the code should work as before (tested with a BS11). Maybe it is smarter to change the way the gsm_bts_alloc function works instead (so you don't need to provide a type there), I'm not sure about that. Regards, Daniel Willmann

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bs11_config showing less info
by Daniel Willmann 11 Jan '10

11 Jan '10

Hello, I've noticed that recent versions of bs11_config don't show all the infos they used to. commit eb429b7b44f1c39548a1995cb93484b9cbe2996e Author: Sylvain Munaut <tnt(a)246tNt.com> Date: Mon Oct 26 20:19:59 2009 +0100 [TLV] Split the parser into 'parse loop' and 'parse single value' seems to be the problem. If I revert it bs11_config query shows more information again. I've looked at the patch, but so far couldn't find out what it does differently. I'll keep looking, but maybe someone else has an idea. Regards, Daniel Willmann

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Branches update & things to consider for merging
by Sylvain Munaut 07 Jan '10

07 Jan '10

Hi, I've just tested code I started at 26c3 but didn't get a chance to test and I updated my various branches. Here's a little status : sylvain/rrlp : This contains only changes to rrlp-ephemeris. Mostly fixes and more support to provide assistance data. Also asn1c patches to fix bugs and a script for people to generate their own test data.ubx from their receiver (to get up-to-date / local data). sylvain/pending: Various things / fixes I made that I consider ready to be reviewed / merged. I tested it all on both my nanoBTS 139. sylvain/encryption: The current state of my encryption support work. I rebased it and used the db structure you pushed for encryption. Everything but the last 3 patches are pre-work / preparation / fixes and are imho OK. The last 3 patches are the real implementation and I also think they're in pretty good shape. Tested and working here :) Limitations includes : No Kc re-use & No MT encryption yet. sylvain/encryption_testing: More encryption work, based on sylvain/encryption but not done/ready. Only pushed so that people can have a peek ... Cheers, Sylvain

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Stack corruption from set_system_infos
by Holger Freyther 07 Jan '10

07 Jan '10

Hi Harald, I have a stack corruption due the above method and here is my analysis of the problem... set_system_infos is having a u_int8_t array with 23 bytes on the stack and is asking to generate system infos into this array... Now what happens is: 1.) some system information types structs are already bigger than the 23 bytes... 2.) this does not take the rest octets into account.. I would like to fix it like this: 1.) Turn bitvec_spare_padding to return void 2.) In the rest_octets_siX method return the bit_vec.data_len 3.) Change the generate_siX to return the sizeof the struct + return value of the rest_octets_siX instead of the fixed MACBLOCK_LEN (23) 4.) always use this rc value instead of the size of the buffer... (due to 1. of the above we set truncated values as well) do you have a better idea? would you just increase the buffer size? z.

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[PATCH 0/5] Change PLL set/work value
by Daniel Willmann 07 Jan '10

07 Jan '10

Hello, this list of patches includes support to change the PLL set and work value with bs11_config. Many thanks go to Dieter Spaar who figured out how to change the work value. Harald, if these patches are okay for you I'll go ahead and commit them. Regards, Daniel Willmann (5): [abis_nm] Add generic abis_nm_bs11_logon function [abis_nm] Add abis_nm_bs11_infield_logon to logon as user field [abis_nm] Add abis_nm_bs11_set_pll function to change the set/work value [bs11_config] Whitespace changes so the help text looks nice [bs11_config] Add pll-setvalue and pll-workvalue commands openbsc/include/openbsc/abis_nm.h | 3 ++ openbsc/src/abis_nm.c | 39 +++++++++++++++++++++++++--- openbsc/src/bs11_config.c | 50 +++++++++++++++++++++++++----------- 3 files changed, 72 insertions(+), 20 deletions(-)

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OpenBSC code questions
by Dimitris Karampatsis 07 Jan '10

07 Jan '10

Hello, I ‘ve tried to use the latest OpenBSC code with a nanoBTS at 850 MHz. I have been able to compile the code in Debian Linux and run it successfully. Mobiles were able to register successfully to the network. In addition the IMSI and TMSI numbers were collected successfully. However, I have encountered a few issues that are summarised below: - Segmentation faults (software crashes) occur in situations where I try to send an SMS message through the telnet interface or when I try to make a phone call from one mobile to another - When sending SMSs from one mobile to another, the SMS are collected successfully to the database but are not sent to the other mobile. In the telnet interface I use the command “SMS SEND PENDING” but nothing happens. The SMSs are sent to the terminating mobile when either restarting the OpenBSC software or when the terminating mobile re-registers to the OpenBSC network - IMEI numbers are sometimes not collected (especially on Nokia phones) or the wrong IMEI number is displayed Have anyone else noticed these issues? I am trying to install a debugger to check why the segmentation faults occurs. The only debugger that works is from Netbeans that uses the GDB debugger. However the debugger hangs when trying to initialise the database (it stucks in command dbi_initialize(NULL) on db.c file) Can anyone help why the debugger hangs or recommend a debugger that will work with this code? Many thanks Regards, Dimitris

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Question about the "Move db usage out of the libbsc (fork dumping of subscr)" commit
by Sylvain Munaut 06 Jan '10

06 Jan '10

Hi, I don't see how this commits helps ? The function code is exactly the same in both files and the db.c dependency in vty_interface.c hasn't been removed. Am I missing something here ? [ See commit 424c4f0e2927d5a7538b31c69113c6e4f861d2c9 on the git for context ] Sylvain

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Re: OpenBSC / GSM network at camp site
by ich＠henrik-hansen.de 02 Jan '10

02 Jan '10

On Fri, 01 Jan 2010 04:05:06 +0100, Miguel Elias <nobody_su(a)chaostreff.ch> wrote: > hi hi, nicht witzig ich arbeite momentan dran :) > 2m sind normalerweise für amateure verwendet, die bos sind normalerweise > auf 4m, aber dass heist nicht das auch auf den kommerziellen frequenzen > auch bos dienste möglich sind. Stimmt schon nur sagt die PDV/DV 800 (hab sie momentan nicht hier, daher kann ich nicht zitieren) das der 2m W/U Funk auf den Betriebskanälen nur für Übungs und einsatzzwecke zu verwenden ist. > ich sehe das nicht so eng und ich denke auch die bnetza nicht, da ihr > auf dem camp nicht den funkdienst mitsbraucht sondern auch da übungen > für eure feuerwehrarbeit. Die Interessiert das herzlich wenig, habe schon 4 auf 2m Relais gesehen um der knappheit an 4m Handfunkgeräten zu entgehen. Rechtlich gesehen absolutes no-go aber kratzt keinen. > es wird wird wohl einfacher sein, mehr dieser 2m funkgeräte zubesorgen > und zusätlich ein sog. relais zu besorgen, welches du dann an einem > hohen standort installieren müsstes... damit würdest jenach gegenheiten > bis zu 30km und mehr abdecken. Da kommen wir schonwieder zu diversen Problemen, BOS 2m Geräte sind eher unerschwinglich (minimum 300eu). Akkus sind relativ teuer. Und sie werden meißtens (99%) dafür angeschafft um auf Fahrzeugen verlastet zu sein. Um im Ernstfalle (Einsatzfall) halt Griffbereit zu sein. Das wir derzeit fürs Zeltlager diese Menge an 2m aus dem Tagesgeschäft rausziehen ist vielen aktiven Kammeraden ein riesiges Dorn im Auge. Und ehrlich gesagt will ich das auch nicht mehr, weil Funk nur dann funktioniert wenn alle richtig Mitspielen. Darüberhinaus habe ich selbst schon oft die erfahrung gemacht das man oft im Feld bei den Kids, es nicht mitbekommt wenn man selber gerufen wird. Und was passiert? 30sek. später klingelt das Handy. 30km hört sich zwar verdammt lecker an, ist aber nicht das was ich will. Fläche von ca 90.000 qm = quadrat von 300m :) (im idealfall) > eine BTS für ein soches netz aufzubauen ist zu einem gewissen grad ein > overkill... Finde ich nicht. Derzeit habe ich zwar noch nicht wirklich Informationen darüber welches Einzugsgebiet ich mit ner nanoBTS abdecken kann, aber wenns was werden sollte denke ich das wir minimum 2 eher 3 BTS'n aufbauen werden. Derzeit habe ich noch keine offiziellen Preise gefunden, aber bereits den Hinweis bekommen das die Kisten für rund 2.5keu über den Ladentisch gehen. Endgeräte finden sich in den meißten Haushalten. Ob man jetzt beigeht und sein primär Handy verwendet, oder das vor-24Monats Modell welches in der Schublade oxidiert, ist jetzt erstmal egal. Aber defakto ist doch das Endgeräte vorhanden sind. Weiterhin ist für mich entscheidend das niemand von mir eine Einweisung in ein Handy braucht. Im regelfall weiß jeder wie sein Handy funktioniert und wenn nicht... ich hab 2000 potentielle 1-Level-Supporter rumlaufen :D Letztlich denke ich das in vielen Köpfren vorhanden ist, das GSM bzw. Mobile Kommunikation immer was mit teurer Technik verbunden ist. Was defakto durch die Arbeit des openBTS Projekts einfach nicht mehr der fall ist. (An dieser Stelle nochmal vielen Dank für die tolle Arbeit) Ausserdem warum nicht? Was spricht dagegen GSM zu verwenden (und Geld ist für mich kein Grund)? Gruß Henrik

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Hello my name is ...
by ich＠henrik-hansen.de 01 Jan '10

01 Jan '10

Hi first i wan't to intoduce myself, i m henrik and am from germany. my english isn't good as is should be but i hope everyone can understand me. :) I'm searching for a Siemens BS-11 GSM1800. Why? Im the technical operator of the biggest summer-camp in lower saxony / germany of youth-fire-fighters. I know hard to understand. :D My plan is it, to operate a GSM zell on our camp next year. some background informations: -2000 youth member at the camp-ground. -up to 200 tecnical supporters. -300 youth supporters. more informations about the event 2009: http://www.zeltlager-2009.de/ The Mainorganisators of the camp know about this idea, and are willing to get a short-time licence for the event. The first contact to the "Bundesnetzagentur" is already done. What can i give the openBSC community? A place to test / benchmark OpenBSC. Also i'm a c / php developer and maybe i can help develope some external features for openBSC. Greetings from cold old Germany Henrik

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OpenBSC January 2010