December 2010 - OpenBSC - lists.osmocom.org

by jason mercury

I have some questions: 1) When I start bsc_hack bsc_init.c first establishes OML link and initializes the bts then it establishes RSL link and bts starts broadcasting. However, it takes so much time to start the bts. Instead of this I want to do the following: it establishes OML link at the beginning and only once, then when i want to start broadcasting it establishes just the RSL link and bts will start faster since i don't have to wait for OML link. What should be done for this? 2) If i send one or two word messages from telnet interface it is okay. But if i send a longer message the phone could't receive the end of the message correctly(last words may be incomplete). Did any one encounter with this problem? What is wrong with me? 3) Could I send SMS in which extension of the sender is text not integer. For example, i want to send an information SMS that this is a test network. For this purpose i want to send an SMS from 'OpenBSC'. I set the extension of the first subscriber in database as text and tried to send the SMS but SMS wasn't delivered. What should i do? 4) Can i add SMS externally to SMS table of database? Thanks. Jason

11 years, 4 months

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New utility for drawing protocol ladder diagrams

by Harald Welte

Hi! With the help of graphviz, I have written a small perl-based tool that allows you to generate ladder diagrams. It can be found at git://git.osmocom.org/gen_ladder.git For your reference, I'm attaching a sample input and output file. The bent/curved arrows are a result of graphviz trying to indicate that the message is between e.g. MS and MSC and 'bypasses' BTS and BSC. I'm still waiting for somebody with more graphviz skills to make this an option. Hope this is useful for some of you... -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 2 months

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Proposed OpenBSC application interface

by Harald Welte

Hi! Collin Mulliner, Tobias Engel and myself have been meeting yesterday to discuss a generic application interface for OpenBSC. They are both doing security analysis and want to achieve a clean way how an external application can get access to a more or less transparent communication channel to the phone. The purpose of this is to be able to send intentionally malformed packets to the mobile phone GSM stack at various different levels within the stack. As of now, they have both hacked some custom code into openbsc that gets them half way where they want to be - but not quite all the way. The requirements can be summarized as follows: 1) Ability to establish a SDCCH or TCH channel by paging the phone As of now, the 'silent call' feature from the VTY already does this. 2) Ability to send arbitrary layer3 protocol messages to the phone Adding this is relatively easy (use rsl_sendmsg on the lchan from the silent call) 3) Ability to receive responses from the phone, as well as error conditions such as 'readio link failure'. We don't have a solution for this yet, and we also have no clean way to identify what might be a response from the phone to the external app, and what might be a message from the phone to the normal network code in OpenBSC 4) Ability to selectively disable partial protocol handling in OpenBSC. Let's say you want to play with the mobile phone call control implementation. In this case, you want to make sure all CC related messages go from/to the external program and not from the regular OpenBSC network code. So what I've been thinking of as a solution to the problem: * store a bypass_flags bitmask related to the subscriber structure, where we indicate values such as BYPASS_RR, BYPASS_MM, BYPASS_CC, BYPASS_SAPI3. * if we process an incoming message from the MS in gsm0408_rcvmsg(), we check if a bypass flag matching the message is found. If yes, forward the message to the external program * if we want to send a message from our own protocol stack to the MS, we check if a bypass flag matching the message is found. If yes, we drop the message that we were about to send. * any messages received from the application will be forwarded to the MS The application interface protocol will likely have a close resemblance to RSL RLL. We need to exchange the following primitives with the application, like: * ESTABLISH REQUEST -- app requests a channel be established to MS (by IMSI) * ESTABLISH CONFIRM -- network confirms a channel has been established * ESTABLISH INDICATION -- network tells app connection was made by MS * [UNIT] DATA REQUEST -- app requests data to be sent to MS * [UNIT] DATA INDICATION -- network indicates data was received from MS * ERROR INDICATION -- network tells app something went wrong * RELEASE REQUEST -- app asks network to release channel * RELEASE CONFIRM -- net tells app that channel was released (as rqd) * RELEASE INDICATION -- net tells app that channel was released (by MS) The channel_number of RSL (indicating on-air timeslot) doesn't make much sense in this context, of course. The link_identifier on the other hand is great as it allows the app to indicate SDCCH/FACCH or SACCH as well as the SAPI. The actual RSL-like protocol would be encapsulated by UDP and available on a socket of the MSC. What do you think? Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 2 months

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Re: OpenBSC on Solaris (WAS: Re: Notes from the 27C3 network)

by omar.atia＠its.ws

Dears, Sorry for hijacking the thread , next time I will create new thread ... I will try to bind using IP to avoid using SO_BINDTODEVICE ,and I will google IP_BOUND_IF as well. Another issue is the linux command for vty which is the c function under linux called cfmakeraw which I removed from vty.c cause there is no library under SUN for that command or function to link with. Can you please ensure that this commented line will not affect vty functionality ? Thanks, Omar atia ------Original Message------ From: Holger Hans Peter Freyther Sender: openbsc-bounces(a)lists.gnumonks.org To: openbsc(a)lists.gnumonks.org Subject: OpenBSC on Solaris (WAS: Re: Notes from the 27C3 network) Sent: Dec 31, 2010 11:28 AM On 12/31/2010 12:30 AM, Omar Atia wrote: > Dears ,, please help :: Dear Omar, please do not hijack threads, start a new one instead. > > in ipaccess-find.c , can we use bind instead of setsockopt cause solaries > doesn't have SO_BINDTODEVICE defined in socket.h. For ipaccess-find is sending a broadcast packet, so it is important to select the physical interface it should be send on. For the user it is more convenient to write the interface name then to remember the ip address of this interface. Does Solaris provide another way to bind to a specific interface? What about IP_BOUND_IF? If that is not the case we could consider doing a normal bind and bind to the interface via an ip... z. Sent via BlackBerry® from mtc touch

13 years, 3 months

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RFC: Relicensing OpenBSC under AGPLv3

by Harald Welte

Hi all! This subject came to my attention again recently: Why not relicense OpenBSC under AGPLv3? Right now we are licensing under GPLv2+ (v2 or any later version). However, if an operator was to make lots of private modifications and then operate it on his own network, there would be no distribution and thus no need for him to release his modified versions of the source code. This may sound a bit strange to those who have been with the project since its early days. But we are reaching production quality now, and we already have the first number of production deployments of the software. Companies like Netzing and On-waves have been FOSS-friendly and funding parts of our development effort. They have no issues with the result being Free Software again. However, there are definitely other companies out there who are less fond of sharing... So thus my idea is to put OpenBSC under AGPLv3. This way whoever uses OpenBSC _in modified form_ to operate a communications network will have to provide the source code to that modified form on a network server at no charge. The only controversial question to me is "your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source". 1) does a gsm network count as computer network? i'd say yes. 2) is using a gsm network 'interacting with it remotely'? I'd also say yes 3) what does 'prominently offer' mean in the context of GSM? We don't want the operator to spam their users with advertisement SMS just to know that they can get the soruce code, after all. Notwithstanding those open questions, such a network operator would always have the option of simply sending back his changes for integration in the official project - and thus he would no longer use a modified version which then means there is no need for the prominent notice / download at all. We can make this very clear in the project documentation, putting further encouragement The actual relicensing should be less problematic than I thought, since AGPLv3 is compatible with GPLv3. So I could re-license all parts that I own copyright on (which should be the majority of the code base anyway) under AGPLv3, while the former GPLv2+ components (like VTY code from zebra, or contributions by other people) then become GPLv3-or-later. Of course I would want to encourage all developers/contributors to also follow the re-licensing. Particularly Holger Freyther, Dieter Spaar, Andreas Eversberg, Jan Luebbe, Sylvain Munaut, Daniel Willmann, Stefan Schmidt. So let's start with a poll: a) Do you think re-licensing to AGPLv3 is a good idea? b) If you have contributed, would you re-license your code under AGPLv3? If we have some kind of concesus in the community, I would approach On-waves whether they would want to do the same for their share of the copyright. As their "modifications" are all part of OpenBSC git repository, they would not be subject to any different conditions than before. Thanks in advance for your feedback, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 3 months

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Re: OpenBSC on Solaris (WAS: Re: Notes from the 27C3 network)

by Dieter Spaar

Hello Holger, On Fri, 31 Dec 2010 11:24:41 +0100, "Holger Hans Peter Freyther" <holger(a)freyther.de> wrote: > > If that is set on the socket for the telnet interface it does make a difference. Just in case, Cygwin also misses cfmakeraw(), my private modification for this is the following which is of course the same you quoted from the man page. #if defined(__CYGWIN__) /* Workaround for Cygwin, which is missing cfmakeraw */ /* Pasted from man page */ void cfmakeraw(struct termios *termios_p) { termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); termios_p->c_oflag &= ~OPOST; termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); termios_p->c_cflag &= ~(CSIZE|PARENB); termios_p->c_cflag |= CS8; } #endif /* defined(__CYGWIN__) */ Maybe there is a Solaris-specific preprocessor symbol and we can add this function to an appropriate place. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 3 months

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Notes from the 27C3 network

by Holger Hans Peter Freyther

Hi all, here are some notes about bsc_hack as it ran on the 27C3. In day0 we discovered a nice SQL injection bug, in day1 we had plenty of segfaults, mostly in the error and time-out paths of the MSC (but also some in the BSC API). These included crashes due clearing the channel and removing the ->lchan from the conn, RLL time out handling in the SMS code and some more. The network ran without segfault (only one crash due my stupidity on a new VTY command) after this. The biggest issue as that SMS got stuck. Code review has found some issues immediately but this didn't fix it. On more code review an issue with the 'subscr_get_channel' was identified. First of all the transaction layer just stopped paging requests, e.g. stopping the paging for someone else's subscr_get_channel, then the Call Control code never called subscr_put_channel when it is done. I have created two band aids for this situation but there is a bigger issue with the code. If somebody has spare time and wants to do some simple changes one can do: 1.) The subscriber layer passes the 'subscr' pointer to the paging layer, it should pass the request to it. 2.) It should be possible to cancel channel requests that were not scheduled yet. 3.) Once we started auth on the channel the 'request' state should be changed too. It is not right now due 1.). 4.) ....

13 years, 3 months

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AW: OpenBSC Digest, Vol 24, Issue 26

by Lud Gidiya

--- openbsc-request(a)lists.gnumonks.org <openbsc-request(a)lists.gnumonks.org> schrieb am Mo, 27.12.2010: Von: openbsc-request(a)lists.gnumonks.org <openbsc-request(a)lists.gnumonks.org> Betreff: OpenBSC Digest, Vol 24, Issue 26 An: openbsc(a)lists.gnumonks.org Datum: Montag, 27. Dezember, 2010 13:00 Uhr Send OpenBSC mailing list submissions to openbsc(a)lists.gnumonks.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.gnumonks.org/mailman/listinfo/openbsc or, via email, send a message with subject or body 'help' to openbsc-request(a)lists.gnumonks.org You can reach the person managing the list at openbsc-owner(a)lists.gnumonks.org When replying, please edit your Subject line so it is more specific than "Re: Contents of OpenBSC digest..." Today's Topics: 1. RE: OpenBSC+LCR+Asterisk installation problem (Caleb Pal) ---------------------------------------------------------------------- Message: 1 Date: Sun, 26 Dec 2010 14:41:39 -0800 From: "Caleb Pal" <cleb(a)defcon-3.net> Subject: RE: OpenBSC+LCR+Asterisk installation problem To: "'jason mercury'" <jmercury313(a)gmail.com>, <openbsc(a)lists.gnumonks.org> Message-ID: <004901cba54e$0ffe0950$2ffa1bf0$@net> Content-Type: text/plain; charset="us-ascii" Are you using Asterisk 1.8? If so, you should checkout the asterisk_1_8 branch of LCR. LCR git was down, it is now back up at a slightly different location, git://git.misdn.org/lcr.git/. mISDN and mISDNuser git are also at the new path. HTH, Caleb From: openbsc-bounces(a)lists.gnumonks.org [mailto:openbsc-bounces@lists.gnumonks.org] On Behalf Of jason mercury Sent: Thursday, December 23, 2010 8:15 AM To: openbsc(a)lists.gnumonks.org Subject: OpenBSC+LCR+Asterisk installation problem Hi, I am trying to install a OpenBSC+LCR+Asterisk system according to the how to send to the mail list by Konrad Meier on Tue Oct 12 18:27:33 2010. During installation of LCR I got following error: make[1]: Entering directory `/home/idb/openbsc/lcr' gcc -DWITH_GSM_BS -I./openbsc/include -I./libosmocore/include -I./openbsc -Wall -DCONFIG_DATA="\"/usr/local/lcr\"" -DSHARE_DATA="\"/usr/local/lcr\"" -DLOG_DIR="\"/usr/local/lcr\"" -DEXTENSION_DATA="\"/usr/local/lcr/extensions\"" -D_GNU_SOURCE -fPIC -c chan_lcr.c -o chan_lcr.po chan_lcr.c: In function 'lcr_indicate': chan_lcr.c:2274: warning: assignment from incompatible pointer type chan_lcr.c:2289: warning: assignment from incompatible pointer type chan_lcr.c:2316: warning: assignment from incompatible pointer type chan_lcr.c:2381: error: dereferencing pointer to incomplete type chan_lcr.c:2382: error: dereferencing pointer to incomplete type chan_lcr.c: In function 'load_module': chan_lcr.c:2818: warning: passing argument 2 of 'ast_register_application2' from incompatible pointer type /usr/include/asterisk/module.h:427: note: expected 'int (*)(struct ast_channel *, void *)' but argument is of type 'int (*)(struct ast_channel *, void *)' make[1]: *** [chan_lcr.po] Error 1 make[1]: Leaving directory `/home/idb/openbsc/lcr' make: *** [all] Error 2 Why is this occur? My ubuntu kernel is 2.6.32-24-generic and i exactly followed the steps. I am attaching that how to again. I also couldn't git check out OpenBSC, LCR , mISDN, mISDNuser and i download them from http://www.linux-call-router.de/download/lcr-1.7/. I want to ask that why i can't git clone. When i try to git clone i take following: git clone git://git.misdn.org/git/lcr.git/ Initialized empty Git repository in /home/idb/op/lcr/.git/ fatal: The remote end hung up unexpectedly If any you have idea please help. Thanks. Jason.

13 years, 3 months

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Open BSC sources...

by Omar Atia

Dear All, I will introduce myself , It is Omar Atia from Lebanon , 8 years telecom experience , willing to know more about open BSC , how can I get the sources if it is free download them (not through unix), from where could I buy the BTS stations are they available it has been sold out as written on the web site . can we configure OpenBTS with OpenBSC ? is it configurable or not tested yet . I have a lot of questions related to this Area as I want to implement the GSM network for testing purposes only to go deeply into it . Thanks,,, Omar Atia TPSG - Functional Consultant ITS Logo.png T. + (961) 9 641555 ext. 416 M. + (961) 3 001294 F. + (961) 9 641555 ext. 217 degital signeture.pngE. <mailto:omar.atia@its.ws> omar.atia(a)its.ws

13 years, 3 months

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OpenBSC+LCR+Asterisk installation problem

by jason mercury

Hi, I am trying to install a OpenBSC+LCR+Asterisk system according to the how to send to the mail list by Konrad Meier on *Tue Oct 12 18:27:33 2010. *During installation of LCR I got following error: make[1]: Entering directory `/home/idb/openbsc/lcr' gcc -DWITH_GSM_BS -I./openbsc/include -I./libosmocore/include -I./openbsc -Wall -DCONFIG_DATA="\"/usr/local/lcr\"" -DSHARE_DATA="\"/usr/local/lcr\"" -DLOG_DIR="\"/usr/local/lcr\"" -DEXTENSION_DATA="\"/usr/local/lcr/extensions\"" -D_GNU_SOURCE -fPIC -c chan_lcr.c -o chan_lcr.po chan_lcr.c: In function ‘lcr_indicate’: chan_lcr.c:2274: warning: assignment from incompatible pointer type chan_lcr.c:2289: warning: assignment from incompatible pointer type chan_lcr.c:2316: warning: assignment from incompatible pointer type chan_lcr.c:2381: error: dereferencing pointer to incomplete type chan_lcr.c:2382: error: dereferencing pointer to incomplete type chan_lcr.c: In function ‘load_module’: chan_lcr.c:2818: warning: passing argument 2 of ‘ast_register_application2’ from incompatible pointer type /usr/include/asterisk/module.h:427: note: expected ‘int (*)(struct ast_channel *, void *)’ but argument is of type ‘int (*)(struct ast_channel *, void *)’ make[1]: *** [chan_lcr.po] Error 1 make[1]: Leaving directory `/home/idb/openbsc/lcr' make: *** [all] Error 2 Why is this occur? My ubuntu kernel is 2.6.32-24-generic and i exactly followed the steps. I am attaching that how to again. I also couldn't git check out OpenBSC, LCR , mISDN, mISDNuser and i download them from http://www.linux-call-router.de/download/lcr-1.7/. I want to ask that why i can't git clone. When i try to git clone i take following: git clone git://git.misdn.org/git/lcr.git/ Initialized empty Git repository in /home/idb/op/lcr/.git/ fatal: The remote end hung up unexpectedly If any you have idea please help. Thanks. Jason.

13 years, 3 months

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AW: OpenBSC / lcr integration through unix domain socket

by Andreas.Eversberg

> The lcr side is less finished, especially > * it will not drop all calls when the OpenBSC [socket] goes away > * it will not re-connect if OpenBSC has disappeared > I hope those can still be adressed properly ahead of 27C3. Andreas: Not sure > if you have some time to look at it. I'll be working on higher priority > items for the 27C3 deployment tomorrow... hi harald, good work. i hope we can complete it before 27c3. (my priority is on packing/preparing for 27c3.) the missing things i will implement then. also i will do the same thing for osmocom-bb. then i will merge everything with the "develop" branch of lcr. best regards, andreas

13 years, 4 months

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Regarding implementation of RLC/MAC in open BSC

by satishn

hi , Im new to Open BSC .In your website it is given that "have the BTS interoperate a SGSN with Gb (NS-over-IP) interface " Does this mean that PCU Stacks(RLC/MAC,BSSGP and NS) are implemented at the BTS. Does Open BSC support PCU stacks. Kindly respond. Regards Satish N

13 years, 4 months

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OpenBSC / lcr integration through unix domain socket

by Harald Welte

Hi! I've finally taken up the taks to split the 'siamese twin' of linking lcr with bsc_hack and replace it with a PF_UNIX, SOCK_SEQPACKET socket. I've done quite a bit of testing and it seems to work fine. The bsc_hack side is complete, i.e. it properly handles the loss of the lcr connection and drops all CC transactions at that point. The lcr side is less finished, especially * it will not drop all calls when the OpenBSC [socket] goes away * it will not re-connect if OpenBSC has disappeared I hope those can still be adressed properly ahead of 27C3. Andreas: Not sure if you have some time to look at it. I'll be working on higher priority items for the 27C3 deployment tomorrow... The openbsc code is in the laforge/mncc_sock branch of openbsc.git The lcr code can be found in the mncc_sockk branch of the unofficial lcr.git repo at git://git.osmocom.org/lcr.git Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 4 months

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AW: mISDN-problem

by Andreas.Eversberg

> newbie question: what does this dmesg mean? hi thomas, this happens, if the user space process does not read from the b-channel socket. since the b-channels have no flow control, the packets get dropped and an error message is printed by the kernel. what program do you use? andreas

13 years, 4 months

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hlrsync.py question

by Thomas Ansorg

hi someone please tell a linux newbie like me: what this script does and how it is executed (hlrsync hlr.sqlite3 dont work) i'm just at the beginning of learning pearl,python and other script stuff T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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mISDN-problem

by Thomas Ansorg

hello newbie question: what does this dmesg mean? T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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multi drop config - almost done

by Thomas Ansorg

hello after compiling the new software, bs11_config tells me for bts1 (the working one): bs11_config (C) 2009-2010 by Harald Welte and Dieter Spaar This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY LMT LOGON: ACK PHASE: 3 Normal MBCCU0: Load MBCCU1: No Load Abis-link: Restoring BS11 ATTRIBUTES: BS-11 ESN PCB Serial Number: 001104 BS-11 ESN Hardware Code Number: 135-2044/03.07 BS-11 ESN Firmware Code Number: 135-2044/03.07 PLL Set Value=1006, Work Value=1038 SITE MANAGER ATTRIBUTES: E1 Channel: Port=0 Timeslot=1 (Full Slot) TEI: 25 BS11 Line Interface ATTRIBUTES: PLL Mode: Standalone BS11 CCLK ATTRIBUTES: CCLK Accuracy: High (1) CCLK Type=0 BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW (GSM) BPORT0 ATTRIBUTES: Line Configuration: Multi-Drop (1) BPORT1 ATTRIBUTES: Line Configuration: Multi-Drop (1) LMT LOGOFF: ACK *************************************************************************** i set the bport multi thing on my own the 2nd bts said this: bs11_config (C) 2009-2010 by Harald Welte and Dieter Spaar This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY LMT LOGON: ACK PHASE: 3 Normal MBCCU0: Load MBCCU1: No Load Abis-link: Restoring BS11 ATTRIBUTES: BS-11 ESN PCB Serial Number: 001112 BS-11 ESN Hardware Code Number: 135-2044/03.03 BS-11 ESN Firmware Code Number: 135-2044/03.03 PLL Set Value=1073, Work Value=1073 SITE MANAGER ATTRIBUTES: E1 Channel: Port=0 Timeslot=6 (Full Slot) TEI: 26 BS11 Line Interface ATTRIBUTES: PLL Mode: Standalone BS11 CCLK ATTRIBUTES: CCLK Accuracy: High (1) CCLK Type=0 BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW (GSM) BPORT0 ATTRIBUTES: Line Configuration: Multi-Drop (1) BPORT1 GET ATTR NACK LMT LOGOFF: ACK ***************************************************************************** as you can see, i set the port to 0 on both, bts1 works on ts1, tei 25 and bts2 on ts6, tei 26. does this configuration match with the attached config-file? unfortunately i couldnt test it thoroghly today, it was late :-( there is a strange errormessage at the end of bts2 report, a possible problem? anyway, i wasnt able to create a bport, neither in connected nor disconnected mode T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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Re: 3G (NodeB / femtocell) roadmap

by Joe Eggleston

On Thu, Dec 16, 2010 at 5:33 AM, Sylvain Munaut <246tnt(a)gmail.com> wrote: > But each time you have to search for whatever name the operator has > for it (like "Home 3G" for SFR, or "Sure Signal" for Vodafone, ...) > In case this is helpful to anyone else, I stumbled on this page that has a pretty good list of the providers using the various femtocells: http://www.thinkfemtocell.com/Examples/where-can-i-buy-a-femtocell.html

13 years, 4 months

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TRX is not responding error message

by Peter Hasse

Hi One of our nanoBTSs startet to reboot very frequently. The debug telnet console shows this error: 12168:WARN:OAM_RES:res_trx_status.c#231:TRX is not responding - reinitialising the unit... 13251:DBG:OAM_IM:Stopping "Primary OML Fallback Client" > 13251:DBG:OAM_IM:Stopping "Secondary OML Server" > 13251:DBG:OAM_IM:Stopping "Secure Secondary OML Server" 13252:DBG:OAM_IM:Not stopping "IML Site Server" - has not been started 13252:DBG:OAM_IM:Not stopping "Secure IML Site Server" - has not been started 13252:DBG:OAM_IM:Stopping "IML Bts Server" > 13252:DBG:OAM_IM:Stopping "Secure IML Bts Server" 13252:DBG:OAM_IM:Stopping "IRL Patched Routing Link" 13252:DBG:OAM_IM:Failed to inject event=1="STOP" into link source (token=9) 13284:DBG:IP_CHAN_SERVER:Closed server listening on port 3006 > 13284:DBG:IP_CHAN_SERVER:Closed server listening on port 3026> 13285:DBG:IP_CHAN_SERVER:Closed server listening on port 3014> 13285:DBG:IP_CHAN_SERVER:Closed server listening on port 3034> 13458:DBG:IP_CHAN_RX_A:15190:ipChanConn: EVENT 0x00001743 rxd in STATE connected 13458:DBG:IP_CHAN_RX_A:15191:ipChanConn: EVENT 0x00001741 rxd in STATE disconnectclosing here is the output of openBSC <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,06) Sending OPSTART <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,07) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) <0005> abis_nm.c:1970 Set Chan Attr (bts=0,trx=0,ts=7) <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,07) Sending OPSTART <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,00) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,01) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,02) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,03) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,04) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,05) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,06) Software Activated Report <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,07) Software Activated Report <0005> abis_nm.c:518 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) ADM=Unlocked <0005> abis_nm.c:518 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) IPACCESS(0xe1): RSL CONNECT ACK IP=192.168.0.1 PORT=3003 STREAM=0x00 <0005> abis_nm.c:518 OC=RADIO-CARRIER(02) INST=(00,00,ff) STATE CHG: OP_STATE=Disabled AVAIL=OK(ff) ADM=Unlocked <0005> abis_nm.c:518 OC=RADIO-CARRIER(02) INST=(00,00,ff) Sending OPSTART <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,00) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,01) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,02) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,03) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,04) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,05) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,06) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=CHANNEL(03) INST=(00,00,07) CHANGE ADMINISTRATIVE STATE NACK CAUSE=Message cannot be performed <0005> abis_nm.c:518 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure <0005> abis_nm.c:518 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure <0005> abis_nm.c:518 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=processing failure Severity=warning level failure Another nanoBTS with same firmware and config works perfekt with the same openBTS installation. Switching to the second firmware bank and flashing a different firmware didnt solve the problem. Any hint where to look for more information ? mfg Peter

13 years, 4 months

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Problem in the communication with a real MSC

by Luca Bertoncello

Hi, List! I'm trying to connect OpenBSC with a real MSC. Unfortunately I have many problems. The first is, that every minute or so, I got these errors: <000f> bsc_msc_ip.c:1047 The connection to the MSC was lost. <000f> bsc_msc_ip.c:976 Lost MSC connection. Freing stuff. <000f> bsc_msc.c:236 Attempting to reconnect to the MSC. <000f> bsc_msc.c:230 Attempting to reconnect to the MSC. <000f> bsc_msc.c:137 Attempting to connect MSC at 192.168.2.103:5000 <000f> bsc_msc.c:170 MSC Connection in progress <000f> bsc_msc.c:99 (Re)Connected to the MSC. <000f> bssap.c:92 Reset ACK from MSC I think, it is not normal, that the communication with the MSC was lost. Both of them (OpenBSC and MSC) are on the same Gigabit network, so there is no connection problem... Any idea? Another problem: I get very oft the error: <0000> chan_alloc.c:441 (bts=1,trx=0,ts=0,ss=0) Recycling Channel. Any idea? Thanks a lot! -- _______________________________________________________________________ Luca Bertoncello Entwicklung Mail: bertoncello(a)netzing.de NETZING Solutions AG Tel.: 0351/41381 - 23 Fröbelstr. 57, 01159 Dresden Fax: 0351/41381 - 12 _______________________________________________________________________ Impressum: NETZING Solutions AG - Fröbelstraße 57 - 01159 Dresden Sitz der Gesellschaft Amtsgericht Dresden HRB 18926 Vorstand Dieter Schneider - Aufsichtsratsvorsitzender Volker Kanitz USt.Id DE211326547 Mail: netzing.ag(a)netzing.de

13 years, 4 months

3
3
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3G (NodeB / femtocell) roadmap

by Harald Welte

Hi all, i just wanted to keep you posted with the 2011 roadmap for 3G integration into our "Free Software Mobile Network" stack. This message summarizes the plan of what I expect to be working on. Comments welcome. 3G support directly in OpenBSC is, however, a bit more difficult than we originally anticipated. The primary problems are: * 3G and 2G share the same core network (CN = MSC/VLR/HLR/AuC/SGSN/GGSN) but have different radio access netowrk (RAN = BTS+BSC vs. NodeB+RNC) * the interface between RAN and CN is different, i.e. 'A' interface (08.08) in GSM case, RANAP in 3G case. * The encoding of the two protocols could not be any different. Hand-coded vs. complex ASN.1 structures So with OpenBSC, we face the following challenges: 1) We implement the GSM-RAN functionality and the CN in one process, without any separation or standardized interfaces between them 2) Implementing RANAP in C can be done, but is probably quite cumbersome given the tons of code asn1c generates and how difficult it seems to get all the memory allocation/freeing right in all the cases What we instead decided to do is: a) Split the BSC part from the CN by implementing the A interface (this is already finished, we now have osmo-bsc to do exactly that) b) Implement a new MSC part, using the A interface towards the BSC This is still possible using our existing code in the original OpenBSC, though we have not completed/finished it yet. The real goal is to have a new MSC, written in a higher-order language that provides proper tools for working with ASN.1 - e.g. Erlang. I have just started working on this and am more or less finished with the lower layers like SCCP and am moving into 08.08 and the actual layer3 protocols. There is already some initial funding secured for the first months of this work, and funding will likely continue. c) Once the 2G functionality of the Erlang MSC is working, add the RANAP interface to it. At this point we should more or less be able to directly connect the Alcatel-Lucent femtocells, as they basically consist of HomeNodeB plus an internal RNC handling the RRC protocol. d) Adding support for ip.access/Cisco/AT&T will need an implementation of their URSL protocol, which is proprietary. URSL can either be added to the new MSC directly, or a URSL<->RANAP translater be developed. e) Adding support for the Ubiquisys/SFR femtocell would require us to implement the UMA protocol stack. This can once again be either done as part of the MSC or using an external translator/gateway program. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 4 months

4
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problems installing openbsc

by Thomas Ansorg

hello all 2day i decided to install openbsc completely neu (had some trouble with the bs11_config), according to the website. libosmocore went thru without problems, openbsc came to the ./configure when the problem occured. the error was: ./configure: line 3673: syntax error near unexpected token `LIBOSMOSCCP,' ./configure: line 3673: ` PKG_CHECK_MODULES(LIBOSMOSCCP, libosmo-sccp >= 0.0.2)' of course i looked at line 3673, but i'm a linux newbie, so i didnt really understand. in the /usr/local/lib/pkgconfig are 3 files: libosmocodec.pc: prefix=/usr/local exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${prefix}/include Name: Osmocom Codec related utilities Library Description: C Utility Library Version: 0.1.27.16-ab12 Libs: -L${libdir} -losmocodec Cflags: -I${includedir}/ libosmocore.pc: prefix=/usr/local exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${prefix}/include Name: Osmocom Core Library Description: C Utility Library Version: 0.1.27.16-ab12 Libs: -L${libdir} -losmocore Cflags: -I${includedir}/ and libosmovty.pc: prefix=/usr/local exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${prefix}/include Name: Osmocom VTY Interface Library Description: C Utility Library Version: 0.1.27.16-ab12 Libs: -L${libdir} -losmovty Cflags: -I${includedir}/ up to the configure call, everything worked fine, libosmocore was complete installed. a makefile wasnt created -> bad! what went wrong? T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

2
1
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problems with 2nd bs11| verbose mode

by Thomas Ansorg

hi to enable as many as possible of you to help me, heres what bs11_config said (the old version): bs11_config (C) 2009-2010 by Harald Welte and Dieter Spaar This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY LMT LOGON: ACK PHASE: 3 Normal MBCCU0: Load MBCCU1: Load Abis-link: Restoring BS11 ATTRIBUTES: BS-11 ESN PCB Serial Number: BS-11 ESN Hardware Code Number: BS-11 ESN Firmware Code Number: PLL Set Value=1006, Work Value=1038 SITE MANAGER ATTRIBUTES: E1 Channel: Port=0 Timeslot=1 (Full Slot) TEI: 25 BS11 Line Interface ATTRIBUTES: PLL Mode: Standalone BS11 CCLK ATTRIBUTES: CCLK Accuracy: Medium (0) BS11 Power Amplifier 0 ATTRIBUTES: TRX Power: 30mW LMT LOGOFF: ACK thats the working one, the non-working says exactly the same, except pll(1073) and work(1073) the abis link on the 2nd is also up, but handys dont find it. the intension ist a multi drop config, but before that, the 2 bs11 should work on its own, right? T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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Reply:- Need help on Open BSC code.

by tejas oza

Hi Holger, After trying to checkout and build the OpenBSC using command git checkout -b on-waves/bsc-master origin/bsc-master, we got error as fatal: git checkout: updating paths is incompatible with switching branches. Did you intend to checkout 'origin/bsc-master' which can not be resolved as commit? So, may be we are not correct on the path or something else. can you please advice, as we are not able to find bsc_msc_ip binary file. On Thu, Sep 30, 2010 at 9:50 AM, Holger Hans Peter Freyther < holger(a)freyther.de> wrote: > On 09/30/2010 03:04 PM, tejas oza wrote: > > Hi Guys, > > > > We are implementing the separate MSC module and we will be using the > openBSC, > > and we are mainly concerned for SMS services. So, I will be highly > obliged if > > you can provide us the documentation on openBSC code so that we can > understand > > the messages expected on separate MSC side from open BSC and the messages > to > > be sent from MSC to openBSC side. > > In the on-waves/bsc-master branch you will find a bsc_msc_ip binary that > will > be able to connect to a real MSC through somthing that is coined SCCP-Lite > (SCCP encapsulated inside the ipaccess protocol). > > If you look at bsc_hack it has no connection to anything but the BTS, so > the > BSC/MSC/VLR/HLR functionality is implemented in one binary. > > -- Thanks & Regards Tejas Oza -- Thanks & Regards Tejas Oza

13 years, 4 months

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[PATCH 0/1] Add bport0/1 support for bs11_config

by Daniel Willmann

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(-)

13 years, 4 months

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multi drop still don't work

by Thomas Ansorg

hello i set one bs11 to ts 1, tei 25 and the other one to ts 6, tei 25(also tried 26 with the 2nd), according to openbsc.cfg.2-2. the cabling is also correct, due to a schematic from harald. but the 2nd bs11 not recognised. the funny thing ist, when i configure the 2nd bs11 exactly like the 1st one(the working one, ts 1, tei 25), it don't work. the parameter from bs11_config query are the same like the 1st, but i don't get the abis link up -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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Re: How RRLP 'MS assisted GPS' really works

by Dieter Spaar

Hello Christian, Thank you very much for the links. On Sun, 12 Dec 2010 19:22:41 +0100, "Christian Vogel" <vogelchr(a)vogel.cx> wrote: > > There are a few. My Trimble Thunderbolt can give you doppler and > codephase (gps often calls it "pseudorange"). Thats interesting, the ublox 5 GPS module I was playing with only provides those data if you have the so called "raw data premium feature" enabled (whatever this means, I have not yet looked at the details). > Sparkfun sells "only the frontend" (mixer, 1-bit ADC, USB) > with sourcecode available in a book and on DVD (WTF?!) > > ---> http://www.sparkfun.com/products/8238 Interesting device, I wasn't aware of it (I know about the book). Is the Source Code of the book available ? So far I have only seen some material for download at the following site, not sure if there is the whole content of the DVD: http://kom.aau.dk/project/softgps/ Would be interesting to use the code with a USRP. > There's actually quite a lot of information out there, > but there also seem to be quite a lot of half-abandoned > projects (and a few seem to have vanished since the last time I had > an interest in it around 2005). I had a short look at some but always had the impression that it is not exactly what I am looking for. I guess I should try to get a GPS receiver which provides the required data, thats probably the easiest approach. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 4 months

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Re: How RRLP 'MS assisted GPS' really works

by Dieter Spaar

Hello Harald, On Sun, 12 Dec 2010 17:01:22 +0100, "Harald Welte" <laforge(a)gnumonks.org> wrote: > > Pretty interesting. If only I had the time to implement it ;) I don't think that implementing is the hard part, debugging is. You send data which might be wrong due to some bugs in your code into a "black-box" which does something with the data. The "black-box" will not tell you if your data are wrong, if they are, it might just take longer till any results are returned. So you are not sure if you are doing the things right. I conclude the above from my experience so far: Even phones with very extensive tracing capabilities don't tell you much about what is going on during their GPS position calculations. And at least I am not aware of a GPS server I have access to who will provide those data required for an "MS-assisted" measurement so that one could compare the own calculation against a reference. If someone know about a server providing those data (I am not talking of things like "almanac" or "ephemeris" here) or knows about existing source code to do the calculation, I would like to know. BTW, the book "Server-Side GPS and Assisted-GPS in Java" contains a few nice chapters, one should not care about "Java" in the title, only the examples are written in Java. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 4 months

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How RRLP 'MS assisted GPS' really works

by Harald Welte

Hi all, I believe I have finally figured out how this 'MS assisted' RRLP mode works. Not sure if I am the first or the last one to understand it, just wanted to share what I know: Just to recap, RRLP has three modes: * E-OTD of different BTS signals (AFAIK not used) * MS-based GPS positioning (optionally with assistance data from the GSM net) * MS-assisted GPS positioning (what I'm talking about now) On Wed, Dec 08, 2010 at 08:53:48AM +0000, Dieter Spaar wrote: > This is from the RRLP specification, those are some of the data for > assisted measurements (those "low-level" data I refered to): > > Data sent to the phone (for every satellite) > > Doppler > Doppler uncertainty > Code phase > Int code phase > GPS bit number > Code phase search window > Azimuth > Elevation Basically this tells the phone: * which doppler shift to expect (result from movement speed of satellite), typically in the range of +/- 5kHz of the GPS L1 frequency * the 'code phase', i.e. the difference between a certain GSM bit (in a specified timeslot/frame number/bcch carrier) and a specified GPS bit (TOW, bit, chip, ...) * which azimuth/elevation to expect (not sure how the phone should use this, unless it knows the orientation of the antenna and has a MIMO receiver) what happens now is that the MS will lock onto one specific satellite. It can do this quickly, as it altready knows * a certain doppler frequency shift (range) in which it should apply a known scrambling code sequence (the satellite number corresponds to a given pseudo-random sequence), and the * expected 'code phase', i.e. the difference between the time at which a certain bit is transmitted on the BCCH carrier of a GSM cell, and which chip of the given satellite will be expected to be received within the GSM cell. Once it acquires the signal, it will measure the number of whole (and fractional) GPS chips that it has observed between * the start of a given GSM frame number (called 'reference frame') and the * wrap of the GPS 1023bit pseudo-random sequence This is then sent back to the network: > Data sent back from the phone (for every satellite) > > Carrier Noise Ratio > Doppler this is the actually measured doppler shift for this satellite in the MS receiver > Whole Chips (0..1022) > Fractional Chips (0..1023) and this is the number of GPS chips between the wrap of the GSM reference frame number and the wrap of the GPS 1023 bit chip sequence. The specification states "The resolution of the fractional portion is approximately 0.3m" So all the phone actually ever does is measurement of timing difference. It will never try to decode the actual GPS signal at all. The network (SMLC) can then compute the GPS position, as it can get the timing information for all the satellites the phone has received, and it already knows all the other data (almanac/ephemeris/...) from a local database and/or its own reference receiver. Pretty interesting. If only I had the time to implement it ;) -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 4 months

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wiring scheme required

by Thomas Ansorg

hello i still don't know how 2 bs11 in multi-drop config are connected correctly. nothing's to find on openbsc.com. someone may send a schematic to me, please. T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

1
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tei and oml ts assignment

by Thomas Ansorg

hello how do i set the tei and timeslot for a bs11? of course i know bs11_config and the tei_oml parameter, but it don't seem to work. i tried ./bs11_config tei_oml 4 30 and 30 4 (to set the timeslot to 4 and tei to 30). but when i query the bs11, it still says timeslot=1 and tei=25. I tried it with and without disconnection of the bs11. how do i call bs11_config correct for that purpose? T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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1
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[ADM] Please try to avoid merges in the git tree

by Harald Welte

Hi all, this is just a general request to everyone with git commit access on the OpenBSC / Osmocom repositories. I would appreciate to restrict the use of 'git merge' to the absolute minimum neccessarry, as it makes the commitlog and timeline much harder to understand. If you're working on some private branch on a particular feature, please rebase that private branch on current master before pushing the changes. Thanks! -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 4 months

2
1
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Bounce action notification

by mailman＠lists.gnumonks.org

This is a Mailman mailing list bounce action notice: List: OpenBSC Member: Barrie.Mcclarity(a)zeusmail.org Action: Subscription disabled. Reason: Excessive or fatal bounces. The triggering bounce notice is attached below. Questions? Contact the Mailman site administrator at mailman(a)lists.gnumonks.org.

13 years, 4 months

1
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AW: Plans for GSM / OpenBSC field test at 27C3

by Andreas.Eversberg

> Andreas: Do you have some SuperSIM to test the new pySIM patch mode and > integrate it with OpenBSC? If not, I will send you some sample cards monday > next week. please send me some cards. i have not followed the pySIM talk in the mailing list. what reader do i need?

13 years, 4 months

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Successfully Implemented SMS capable MSC & VLR

by tejas oza

Hi Holger, If you remember we are the students from Uppsala University Sweden. I am glad to inform you that we have done with our project. We have successfully implemented SMS capable MSC and VLR in Erlang, integrated with Mobile Arts SMSC, HLR and OpenBSC. We are also planning to make our project Open source and will inform you as soon as we will finalize it. -- *Thanks & Regards Tejas Oza Masters in Computer Science, Department of Information Technology, Uppsala University, Sweden.*

13 years, 4 months

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Control Interface

by Harald Welte

Hi Daniel, i am occasionally browsing the commitlog of the daniel/controlif branch and am wondering what exactly is happening there. It seems much more to me that 'controlif' is about reimplementing a lot of the functionality that already exists in the VTY, which I think is bad. My original understanding of the idea of SNMP support was: 1) we mostly want to export counters that we already have, but in a consistent/machine-parseable way. This is read-only 2) we may want to have traps 3) we have some (few!) things like rf_lock which should be issued (written) by the external SNMP process. Has the focus changed since this last discussion? Can anyone explain why that is? Even if we suddenly have a need for a lot of write/modify type settings from the SNMP side, we should not have two ways how to modify a single parameter inside OpenBSC. In that case we may need some code that can sort-of automatically 'export' all controlif parameter to the VTY, and remove the current code that sets this parameter from the VTY. Any ideas? Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

13 years, 4 months

2
1
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Compiling OpenBSC to use an extern MSC

by Luca Bertoncello

Hi, list! I'd like to try to compile OpenBSC with the A-over-IP in order to connect it to a real MSC. I found this document: http://openbsc.osmocom.org/trac/wiki/OpenBSCWithSCCP But when I try to get the branch I get an error: $ git checkout -b on-waves/bsc-master origin/bsc-master git checkout: updating paths is incompatible with switching branches/forcing Did you intend to checkout 'origin/bsc-master' which can not be resolved as commit? Is now this project in another branch? Can someone say me, what I have to do to compile it? Thanks a lot! -- _______________________________________________________________________ Luca Bertoncello Entwicklung Mail: bertoncello(a)netzing.de NETZING Solutions AG Tel.: 0351/41381 - 23 Fröbelstr. 57, 01159 Dresden Fax: 0351/41381 - 12 _______________________________________________________________________ Impressum: NETZING Solutions AG - Fröbelstraße 57 - 01159 Dresden Sitz der Gesellschaft Amtsgericht Dresden HRB 18926 Vorstand Dieter Schneider - Aufsichtsratsvorsitzender Volker Kanitz USt.Id DE211326547 Mail: netzing.ag(a)netzing.de

13 years, 4 months

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Moving subscr_{get/put}_channel in gsm_subscr.c (instead of gsm_subscr_base.c)

by Sylvain Munaut

Hi, I'm now having another look at implementing MT ciphering. For this, I need to work inside the paging system. What I'd like is that the MSC part instead of ever using paging_request directly, that they all use subscr_get_channel. Then this would also encapsulate securing the channel and only call the call back when the channel has been ciphered and is ready for the MSC part. This requires making some gsm_04_08 call inside the subscr_get_channel, so I need to move that call to the 'msc' side of gsm_subscr.c To me, it makes sense. I don't see in what context a BSC would use get/put channel ... the BSC doesn't decide, it's just ordered what to do by the MSC IIUC. I would then also replace all calls to paging_request in gsm_04_08.c by calls to subscr_get_channel. And also move the "paging_succeded" signal dispatch to the subscr_get_channel call back and not directly from gsm_04_08_utils.c (since that signal is used currently to trigger SMS delivery and other "side" things when we have a channel, it's more a MSC thing). Finally, I'd need to pass the msgb paging response all the way to the paging callback because it contains important field to enable ciphering. Any objections to this plan ? Did I miss something ? Cheers, Sylvain

13 years, 4 months

2
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multi-drop-configuration

by Thomas Ansorg

hello the cables are built, now i want to use 2 bs11 in multi drop config. how do i connect the 2 bs11? the e1 comes from the pc to the 1st bs11 left half, left tx, right rx(front view). now i'm on the right half: to which port are the 2 bnc port from the 1st to the 2nd bs11 to be connected? i tried the 2 possible combinations, didn't work (with the openbsc.cfg.2-2). the 2 bs11 are both set to tei=25 (bs11_config told me so) a schematic would be perfect. second problem: the timer instructions in the openbsc.cfg.2-2 are not executable, the bsc_hack program stops there. i had to remove them. what's the matter with that, why don't these timer instructions work? answers in german *very* welcome! -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

2
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socket problem

by jason mercury

Hi to all, In order to execute two bsc_hack at the same time i have changed port for oml link from nv_put_oml() function in ipaccess_config.c and i also changed oml port from ipaccess.h . When i configure nanoBTS with ipaccess_config i can establish two different oml link between two bsc_hack and two nanoBTS. rslHowever, they can not establish link at the same time. I could not find where can i change rsl port of nanoBTS. I have searched the wiki and i could not find a nanoBTS message to change the port specified for rsl link. Could anyone give me some information about this? Thanks. Jason

13 years, 4 months

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OpenBSC and Asterisk with NanoBTS and no ISDN

by Chris Rankine

I am trying to get OpenBSC working with Asterisk for a class project. I have a NanoBTS DCS1800. I was hoping to get this to work entirely over Ethernet, as the server is running on a controlled VM cluster with no way of getting an add-on ISDN card in. I have attempted to follow the OpenBSC+LCR+Asterisks route. But as expected, LCR gives me issues when it does not find an ISDN card. I am not familiar with LCR to tweak it. Can I use LCR without an ISDN card? What should I look into to get this done? I have also attempted to modify the asterisk chan_openbsc code to comply with the libosmo break off earlier this year. With a few Makefile adjustments, include a few more header files, and strip out some debuging code, everything will compile. However, asterisk seg faults when the module loads. The gdb output is: Program received signal SIGSEGV, Segmentation fault. 0xb72fcd1d in cmd_execute_command_strict (vline=0x83d4c88, vty=0x83c2450, cmd=0x0) at command.c:2000 2000 cmd_vector = vector_copy(cmd_node_vector(cmdvec, vty->node)); I am not familar with this code, so all I can do is comment out things in an attempt to debug. Eventually I keep it from crashing, and the nanoBTS will make contact with the driver. However, since the code that gets commented out also involves loading the cfg, the BTS does not get bootstraped. This is all running on Gentoo, though I have also tried on Debian and Ubunto. Any help would be appreciated.

13 years, 4 months

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Re: Calls are "stuck"

by Dieter Spaar

Hello Andreas, On Sun, 05 Dec 2010 00:28:27 +0100, "Andreas Galauner" <andreas(a)galauner.de> wrote: > > Also, the network sometimes is hard to find on the mobile phones. We > blame a bad calibrated oscillator for that. As soon as we got an HFC-S > card, we will try to recalibrate it. As I mentioned here a few days before, its usually enough to reset the PLL "work value" to its "set value" with bs11_config ("pll_workvalue" command) and set the PLL to standalone ("pll_standalone" command). > Is it possible that all those problems show up because of the > oscillator? And why did it work really well on Thursday? I don't think that the problems with calls are related to the oscillator, I would expect that this is related to the misdn errors you see. Maybe the ISDN cable termination is not set properly ? Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 4 months

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Calls are "stuck"

by Andreas Galauner

Hello everybody, this is my first post to this list. I've been reading it for a while now and I'm finally trying to get a bit deeper into GSM. We have a BS11 in the C4 (Chaos Computer Club Cologne) which I got fully working on Thursday this week. We had several mobile phones in the network and called each other and we could send and receive sms. All fine. Today I wanted to test another few things and everything got weird: I have 2 mobile phones authenticated in the network. One phone can call the other one, it rings and after accepting the call, the first still plays the "ringing sound", while everything on the second is silent. Vice versa, if I call the first mobile from the second, it dials endlessly. Sometimes OpenBSC segfaults. Before it does that, it tells me on the console that timer T303 expired. Another thing are those masses of "mISDN_send: error -12" messages in the kernel log. We got those on Thursday, too but they weren't important to us, because everything worked. Nevertheless, sending and receiving SMS still works. Also, the network sometimes is hard to find on the mobile phones. We blame a bad calibrated oscillator for that. As soon as we got an HFC-S card, we will try to recalibrate it. Is it possible that all those problems show up because of the oscillator? And why did it work really well on Thursday? So far, I tried a few obvious things like rebooting, both the computer and the BS11, cleaning and recompiling everything and I even deleted the old HLR database. I really don't know what to do else. <Insert helpless cry here> ;) Does anybody of you have an idea what I can try? We are running the latest OpenBSC from the git on a Debian testing with a stock 2.6.32-5 kernel on i686. Greetings, Andy

13 years, 4 months

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BS11 power problem

by Sergey V. Efimoff

Hello All, Herr Thomas had raised up a discussion about problem with setting of BTS power attribute value. In connection with this question, I recall another problem which has occurred with one of my BTS's. It has a very strange behavior. Its output power is set to 2W. My measure device tells me that receive level at the desired channel is about -24 dBm after station boot-up. This value is very good, no other base station around shows better results. But right after the very first GSM call the receive level quickly jumps down to -70 or even -80 dBm, this value corresponds to 30mW of output power. BTS station still works and output power is still shown as 2W. This effect had been discovered with only one of my BTS stations, while other stations work well. Does it mean that it's a hardware problem? Has anyone discovered this problem earlier? Best Regards, Sergey.

13 years, 4 months

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nanoBTS BER Test

by EGU 2100

Hi, I like to perform a TCH BER Test for nanoBTS via R&S CMU300. Does anyone know how to configure the nanoBTS using ipaccess-config to perform this BER test? Thanks! EGU

13 years, 4 months

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Re: bs11 not working

by Dieter Spaar

Hello Sergey, On Thu, 2 Dec 2010 21:08:09 +0300, "Sergey V. Efimoff" <risky(a)mail.ru> wrote: > > I had once or twice seen BTS stations which had working PLL value > very different from calibrated value. In order to get them close I had to > use E1 hardware with high precision oscillator, then switch the > hardware to the PLL-locked mode. This operation took me plenty > of time. > > Please tell, is it possible to set the working PLL value directly? Yes, bs11_config supports this. Its the "pll-workvalue" command. The way how the PLL workvalue could be set was not obvious so it took a while till we found out how this could be done. Thats the reason why it took quite long till this command was introduced. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 4 months

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Re: bs11 not working

by Dieter Spaar

Hello Sylvain, On Thu, 2 Dec 2010 15:20:07 +0100, "Sylvain Munaut" <246tnt(a)gmail.com> wrote: > > The clock of the non working one might just be too off ... > > See http://openbsc.osmocom.org/trac/wiki/isdnsync for a tool to > calibrate (with appropriate HW). > > If you don't have the equipement ... huh, good luck. > You can always try random values until it works. > If you have a USRP you can try to lock onto it and compare offset ... Its possible to set the clock calibration to a fixed value, this was a feature introduced a while ago. The original clock calibration setting workes pretty good, at least from my experience. So if the clock is off due to using the E1 clock as a reference, it should be enough to set the orginal clock calibration value and switch the PLL to standalone mode. Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

13 years, 4 months

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Free Software GSM Talk in Berlin on Dec. 9th

by Ali Gündüz

Hello all, I'm going to be giving a presentation about free software GSM implementations at the FSFE's Berlin meeting on December 9th, 2010. It will be very elementary and newcomer-friendly. I'm planning to go over OsmocomBB, OpenBTS and OpenBSC, and discuss their security and practical implications. The talk will start at 19:30 in Newthinking Store Tucholskystr. 48, 10117 Berlin. You can find more about it on http://aligunduz.org/blog/free_gsm_talk_next_week.html Considering I'm not an expert on GSM myself, it would be nice to have people more familiar with it in attendance. Ali Gündüz

13 years, 4 months

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Re:socket problem again

by jason mercury

On 12/01/2010 05:10 PM, Holger Hans Peter Freyther wrote >* we still use the global bsc_gsmnet in many places. We need to remove that to *>* allow something like this.* Is it a too much difficult process? Should i try to do this and where should i start? On 12/01/2010 05:07 PM, Sylvain Munaut wrote: * >That's an option. See nv_put_prim_oml in ipaccess-config.c* I think this is for changing the port of nanoBTS. Where should i modify the port for bsc_hack? Thanks. Jason ** * *

13 years, 4 months

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bs11 not working

by Thomas Ansorg

hi my 2nd bs11 doesnt work. the boot screen from bs11_config looks like this(attached pic). both boot screens look like that, the operational one too. the 2 bs11 are connected identical, the software is the same. one works, the other doesnt. bad! the bootstrapping works on both, but the handy can only detect the one of two bs11. troubleshooting advices are welcome, openbsc website was no help T. -- Wer Rechtschreibfehler findet, darf sie behalten!

13 years, 4 months

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OpenBSC December 2010