OpenBSC

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4278 discussions

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05 Nov '12

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triplets calculation
by Yann R. Moupinda 01 Nov '12

01 Nov '12

Hi guys, i'm trying to interconnect a WLAN router with my GSM-sysmoBTS and to use the EAP-SIM authentication protocol. For that i installed a Freeradius on an external board that i use as radius server. The Freeradius should use a database file in order to realise the authentication and the idea is that Freeradius should be able to read the hlr.sqlite3 file from my sysmoBTS. I'm not so far to do this part of the work so, i first want to do some tests using the sim card from sysmoBTS (imsi und ki) and the triplets (RAND, Kc and SRES). I want to create a flat file containing this values so the Freeradius will directly use the file to get the triplets. I thought i could get the triplets stored in one of the tables of hlr.sqlite3 (AuthLastTuples) but there is no information on it. From the table AuthKeys i could find some Ki values (e.g X'019B7083FBAFC928421A147DE795217782'). I found that there is an "osmo-auc-gen" program for computing the triplets. By using the Ki from AuthKeys and a self generated RAND (e.g 0123456789ABCDEF0123456789ABCDEF) the program doesn't run and doesn't give the triplets. The used authentication algorithm is the COMP128v1. Has anyone an idea why it doesn't work and why there is no information in the AuthLastTuples table from sysmoBTS ? best regards Yann

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[openbsc PATCH v2] Make openbsc also compile/run on OSX
by Tobias Engel 31 Oct '12

31 Oct '12

I modified the patch for ipaccess-find based on Jim's and Holger's suggestions. Still not sure what to do about the (coming) librt dependency, so no new version of that patch for now. Tobias Tobias Engel (1): Remove iface arg if SO_BINDTODEVICE isn't available openbsc/src/ipaccess/ipaccess-find.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) -- 1.7.10.2 (Apple Git-33)

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BS-11 and HFC-E1 for sale
by Bernd Baumgraß 30 Oct '12

30 Oct '12

Hello, I am thinking about selling my Siemens BS-11 and a compatible HFC-E1 Evaluation Board. If anyone is interested please send me a mail: baumgrass at hotmail.com . Regards, Bernd.

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Testing OpenBSC with a FakeBTS
by Holger Hans Peter Freyther 28 Oct '12

28 Oct '12

Hi, I wrote some code that lets me test OpenBSC without using real hardware, e.g. one is bothered to wait for the nanoBTS to open the OML connection again, one doesn't have the unit for the right band, one doesn't have a dual trx system, or because reproducing the issue is difficult (RF interference, LAPDm timeouts). I have packaged the code with OBS and right now it is only available for debian stable (it can be installed on unstable as long as the stable feeds are inside the sources.list). Install: $ echo 'deb http://download.opensuse.org/repositories/home:/zecke23/Debian_6.0/ ./' > /etc/apt/sources.list.d/ $ aptitude update; aptitude install gnu-smalltalk osmo-st-openbsc-test (the packages are signed but the key expired two years ago, so the question is if you want to trust Debian packages from OpenSUSE) Using: $ gst st> PackageLoader fileInPackage: #FakeBTS ... st> bts := FakeBTS.BTS new. st> bts btsId: '1/0/0' st> bts connect: 'localhost'; waitForBTSReady. ... Testing: There is the FakeBTS.OpenBSCTest class that has methods to require channels and these Lchans can be used to send RSL messages. I don't have a public example at this point though. Vision: I hope this code will be used to do nightly tests of OpenBSC, specially the error paths (e.g. timeouts on handover, timeouts on assignment, timeouts on channel release, etc.) There is a branch that brings DualTRX support and I am going to merge this to master soon. What I am missing is some test launcher code (it can be in python or ruby if someone volunteers) that will launch osmo-bsc/osmo-nitb with a given configuration file and initialize the HLR with a set of given subscribers. enjoy holger PS: Blog post will follow once the code has matured a bit

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[openbsc PATCH 0/3] Make openbsc also compile/run on OSX
by Tobias Engel 27 Oct '12

27 Oct '12

These are some minor modifications to make openbsc run on OSX. You have to have these MacPorts installed: pkgconfig automake autoconf libtool libdbi libdbi-drivers sqlite3 ... and set: export LDFLAGS='-L/opt/local/lib' export CPPFLAGS='-I/opt/local/include' Everything else should work as usual. Tobias Engel (3): Remove interface argument when compiled on OSX Remove unused librt dependency Set byte order defines when compiled on OSX openbsc/src/ipaccess/ipaccess-find.c | 4 ++++ openbsc/src/libmgcp/mgcp_network.c | 8 +++++++- openbsc/src/libtrau/rtp_proxy.c | 8 +++++++- openbsc/tests/mgcp/Makefile.am | 2 +- 4 files changed, 19 insertions(+), 3 deletions(-) -- 1.7.10.2 (Apple Git-33)

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[libosmocore PATCH 0/3] Make openbsc also compile/run on OSX
by Tobias Engel 27 Oct '12

27 Oct '12

These are some minor modifications to make openbsc also run on OSX. You have to have these MacPorts installed: pkgconfig automake autoconf libtool libdbi libdbi-drivers sqlite3 ... and set: export LDFLAGS='-L/opt/local/lib' export CPPFLAGS='-I/opt/local/include' Everything else should work as usual. Tobias Engel (3): Define struct iphdr for OSX Do not use --version-script linker flag on OSX Add "extern" keywords configure.ac | 12 ++++++++++++ include/osmocom/gsm/abis_nm.h | 10 +++++----- src/gb/Makefile.am | 2 +- src/gb/gprs_ns_frgre.c | 2 +- src/gsm/Makefile.am | 2 +- 5 files changed, 20 insertions(+), 8 deletions(-) -- 1.7.10.2 (Apple Git-33)

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BTS-MS direct connection.
by Andrew Back 26 Oct '12

26 Oct '12

Hello, I'd like to directly cable a handset to a nanoBTS and thought I could: - put attenuators on the nanoBTS TX and RX ports - connect the other side of each attenuator to a resistive splitter/combiner that has 6dB loss - connect the combiner common port to the MS Does this sound sensible and if so what size of attenuators might I want assuming MS and BTS were each set at 6dBm? I've seen figures for receiver sensitivity, but wasn't sure as to a "good" RF level to use with direct cabling! I also have 10/20 dB directional couplers and circulators if they might find use in a better configuration. Regards, Andrew -- Andrew Back http://carrierdetect.com

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Anyone selling NanoBTS
by Akib Sayyed 24 Oct '12

24 Oct '12

if anyone selling nano bts please let me know -- Akib Sayyed Matrix-Shell akibsayyed(a)gmail.com akibsayyed(a)matrixshell.com Mob:- +91-966-514-2243

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NanoBTS Problems
by Nicklas Boecking 24 Oct '12

24 Oct '12

Hello, I'm working with OpenBSC since 2 month. Currently my OpenBSC setup runs with 2 mobile phones which can communicate A5/1 encrypted with each other. I got several problems while running this system with a NanoBTS. I use osmo-nitb. Entries in my HLR receive wrong time values. The time values of the column "created" and "updated" are exactly 2 hours earlier than they should be. The system time of the controller works fine and the time in the logs from "./osmo-nitb -e 1 -T" is correct. Are there any other timers which work with the NanoBTS? Furthermore my network does not run stable. Sometimes following error occurs : input/ipaccess.c:454 Bad signalling Message, sign link returned error input/ipaccess.c:260 Forcing socket shutdown with no signal link set The error usually appears after some authentification "traffic". Sometimes the system runs stable for several hours without any errors. The error leads to a restart of the connection. I'm not sure if this problem has something to do with the first problem. thanks and best regards! Nicklas

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