OpenBSC July 2025

openbsc@lists.osmocom.org

7 participants
19 discussions

cmd2 update causing pySim-shell to fail
by bryan coxwell 28 Nov '25

28 Nov '25

Hi all, Just wanted to share an issue and a quick workaround I found for it in case anyone else has the same problem. I believe a cmd2 update is causing pySim-shell to fail. After installing it on a fresh install of Ubuntu Server 20.04 and getting the following error when I run "python3 pySim-shell -p0": >Using PC/SC reader interface >Autodetected card type: sysmoUSIM-SJS1 >AIDs on card: > USIM: a0000000871002ffffffff8907090000 >Traceback (most recent call last): > File "pySim-shell.py", line 512, in <module> > app = PysimApp(card, rs, opts.script) > File "pySim-shell.py", line 59, in __init__ > super().__init__(persistent_history_file='~/.pysim_shell_history', allow_cli_args=False, use_ipython=True, auto_load_commands=False, command_sets=basic_commands, >startup_script=script) >TypeError: __init__() got an unexpected keyword argument 'use_ipython' If you run into this you can fix it by uninstalling cmd2 and reinstalling cmd2 with "pip3 install cmd2==1.5". Best, Bryan

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Struggling with Your Final Research? Let's Talk About PhD Dissertation Help!
by teves20525＠binafex.com 27 Nov '25

27 Nov '25

I’ve been spending weeks trying to find a reliable dissertation writing help service, but the options online feel endless and honestly, overwhelming. Some seem legit, others not so much. I'm at the PhD level, so the stakes are high, and I can’t afford to take risks on poor quality or generic content. Has anyone here actually used a dissertation writing service they’d recommend? I’m especially looking for something that offers strong PhD dissertation help with proper research support. What red flags should I watch for? How do you even verify a service is trustworthy? Any insights or personal experiences would really help me (and others) out! https://www.dissertationproposal.co.uk/dissertation-services/phd-dissertati…

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Splitting out M3UA and MTP3 out of Open BSC into a separate library
by Arran Cudbard-Bell 20 Nov '25

20 Nov '25

Hi, Developing a module for FreeRADIUS to support EAP-SIM and EAP-AKA authentication against a HLR. The HLR we were targeting only supported a SCTP/M3UA/SCCP/TCAP/MAP stack, so we couldn't use SUA. Ripping the M3UA/MTP3 code out of OpenBSC worked surprisingly well. We ended up running the event loop in a separate thread to work around the threading issues. Unfortunately the HLR implements the ANSI variant of everything, whereas OpenBSC and supporting libraries seem to have been written to be compatible with the ITU standards. ...but the differences are fairly minor at MTP3 and SCCP layers, and i've started work on a patchset for libosmo-sccp. https://gerrit.osmocom.org/#/c/73/ Anyway, trying to gauge interest in splitting those layers out of Open BSC into a separate library, would be happy to take on M2UA as well for consistency. It would almost certainly get more projects using the code. There's very little out there even in Perl land for working with SS7. Thanks, -Arran Arran Cudbard-Bell <a.cudbardb(a)freeradius.org> FreeRADIUS Development Team FD31 3077 42EC 7FCD 32FE 5EE2 56CF 27F9 30A8 CAA2

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Managing Complicated Laws in BSC Implementations
by Fennellmarian018＠gmail.com 20 Nov '25

20 Nov '25

The complexities of Base Station Controller (BSC) integration in open-source mobile networks have presented me with a number of overlapping areas pertaining to telecommunications legislation and regulatory compliance. In order to better comprehend how international legal standards affect open BSC installations in various jurisdictions, this intersection has unanticipatedly prompted me to seek [url=https://dissertationwritinghelp.uk/law-dissertation-help/]law dissertation help[/url]. I would love to hear from anyone else who has studied legal issues in their OpenBSC-related academic or practical work, as well as suggest some books.

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ip.access nano 3G S8 Configuration
by John Thewlis - Meath Broadband 18 Nov '25

18 Nov '25

We are trying to setup this AP as part of the 3.5G Osmocom project. We have the software stack operational and are now preparing the nano for testing. When we try to login via telnet at port 8090 we are getting a constant refusal to connect:- root@osm/openbsc/openbsc/src/ipaccess# telnet 192.168.192.30 8090 Trying 192.168.192.30... telnet: Unable to connect to remote host: Connection refused The device seems to be locked as indicated by the leds on the front panel. We have tried resetting the nano to see if this would help but to no avail. Any ideas as to how to access the device for initial configuration?. Thanks John

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GPRS - local and foreign TLLIs
by Luca Melette 18 Nov '25

18 Nov '25

Hello everybody, after setting up a nanoBTS with OpenBSC/SGSN/GGSN, I had some troubles trying to connect my smartphone to the GPRS cell. Investigating the BTS-to-SGSN traffic, I saw that the frames sent by the SGSN were all marked with the same N(U) value (at LLC layer), the value was 0. With some debug, I found that the there was a mismatch in the TLLI storage, used to keep the status of attached terminals. The mentioned code is contained in gprs_llc.c, involving LL Entity functions and gprs_llc_tx_ui(). /* look-up or create the LL Entity for this (TLLI, SAPI) tuple */ lle = lle_by_tlli_sapi(msgb_tlli(msg), sapi); if (!lle) { struct gprs_llc_llme *llme; LOGP(DLLC, LOGL_ERROR, "LLC TX: unknown TLLI 0x%08x, " "creating LLME on the fly\n", msgb_tlli(msg)); llme = llme_alloc(msgb_tlli(msg)); lle = &llme->lle[sapi]; } The TX function uses the previously received TLLI to lookup for the LLE. The lle_by_tlli_sapi() performs the search, but preliminary it applies a foreign2local TLLI conversion to ensure to have a local one. Since no valid entry for the searched TLLI is found, a new one is created. And the problem is here. The new entry has the foreign TLLI. Next time the lookup fails again, and a new entry is created. This way, the counter N(U) is always reset, and the mobile do not recognize the message sequence and no attach is possible. My question is about foreign and local TLLIs. I patched the lookup, avoiding the conversion, so that the LLE is found and everything works fine... but... What is the sense of the conversion? Should the TLLI be always stored as a local one? Can this problem be solved with another foreign2local while allocating new entries? Actually, my problem has been solved with that workaround. But I'm curious to know what is the right way. Hope somebody can answer :) Thanks. Cheers, LM

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Need nano3G (S8 - Model 237A)
by Akib Sayyed 18 Nov '25

18 Nov '25

Dear List I am extremely sorry for off the topic question. I am willing to buy nano3G Nodeb. Is anyone in list have spare which can be sold. Please let me know. -- Akib Sayyed Matrix-Shell akibsayyed(a)gmail.com akibsayyed(a)matrixshell.com Mob:- +91-966-514-2243 <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

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Best Review Platforms UK for Small Businesses in 2025?
by olivianaylor322＠gmail.com 14 Nov '25

14 Nov '25

Hey everyone! I'm looking to boost my online presence and would love some suggestions. What are the best review platforms UK https://truereviews.uk/ businesses are using right now? I'm mainly targeting local customers, so trustworthy and widely-used platforms are key. Any tips or experiences with Trustpilot, Google Reviews, or others? Thanks in advance!

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Having trouble balancing GSM projects and coursework?
by fennellmarian018＠gmail.com 08 Sep '25

08 Sep '25

As someone knee-deep in OpenBSC settings and attempting to gain a firm understanding of BTS to BSC handovers, I've struck a stumbling block in balancing my technical deep dives with academic duties. Between tracing Abis interface logs and diagnosing paging issues, I barely have time to concentrate on my finance studies. To be honest, I've pondered finding someone to take my accounting class for me so that I can continue with my telco experiments here. I'm not sure whether anyone else is dealing with the same workload, but if you've discovered a solid workflow or technique, I'd love to hear about it because OpenBSC is currently capturing my full attention. visit: https://takemycourseforme.us.com/pay-someone-to-take-my-online-accounting-c…

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Struggling with Assignments? Let’s Talk About It!
by teves20525＠binafex.com 05 Sep '25

05 Sep '25

Hey everyone, I’ve been seriously overwhelmed lately trying to manage all my coursework, deadlines, and part-time job. It’s got me thinking how do others handle the pressure? I’ve been considering looking into an online university assignment help UK service but I’m not sure where to begin. Are these services reliable? Have you used one that actually delivered quality work without breaking the bank? I’m really looking for honest recommendations or red flags to avoid. What should I keep in mind before choosing one? Let’s share experiences maybe we can help each other out! Visit here: https://assignmenthelpinuk.co.uk/university-assignment-help/

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