OpenBSC July 2025

openbsc@lists.osmocom.org

7 participants
25 discussions

Splitting out M3UA and MTP3 out of Open BSC into a separate library
by Arran Cudbard-Bell 15 Dec '25

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

27 Nov '25

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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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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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Pysim error: SW match failed
by Martin Nagy 16 Aug '25

16 Aug '25

Hi all, After buying a super Sim Kit (16 in 1) from China, I tried the reader (green PCB inside a blue transparent plastic case with a blue LED) and SIM (identified as a fakesupersim) with pysim tool. However i am getting the following error: /pySim-prog.py -n 26C3 -c 49 -x 262 -y 42 -z 1234 -j 1 -t auto Insert card now (or CTRL-C to cancel) Autodetected card type fakemagicsim Generated card parameters : > Name : 26C3 > SMSP : e1ffffffffffffffffffffffff058100945555ffffffffffff000000 > ICCID : 8949262427518313026 > MCC/MNC : 262/42 > IMSI : 262422461512085 > Ki : 7b74741a1ee14337ec23f9ab92a13648 > OPC : ccd867d60797d8d45354a51b3ef568ff Programming ... Traceback (most recent call last): File "./pySim-prog.py", line 530, in <module> card.program(cp) File "/home/nadicek/pysim/pysim/pySim/cards.py", line 231, in program self._scc.update_binary('6f30', hplmn + 'ff' * (tl-3)) File "/home/nadicek/pysim/pysim/pySim/commands.py", line 53, in update_binary return self._tp.send_apdu_checksw(pdu) File "/home/nadicek/pysim/pysim/pySim/transport/__init__.py", line 87, in send_apdu_checksw raise RuntimeError("SW match failed ! Expected %s and got %s." % (sw.lower(), rv[1])) RuntimeError: SW match failed ! Expected 9000 and got 9804. I checked mailing lists and haven’t found anybody who had similar problem with pysim. Also I have tried forcing different models of SIM, but nothing is working. Obviously I can remove this check from the script file (__init__.py in /pySim/transport), however somebody had a reason to put such condition there. I would like to ask if it is safe to remove that line of code and the purpose of that line of code. Thanks a lot and best regards Martin

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Scooping Up Fun: A Guide to Mastering Papa's Freezeria (and Why it’s so Addictive)
by other.smelt.wljz＠letterprotect.net 23 Jul '25

23 Jul '25

Ever felt the thrill of running your own business, but without the crushing responsibility of real-world finances and demanding customers? Store management games offer the perfect escape, blending simple mechanics with surprising depth and addictive gameplay. And when it comes to satisfying that craving for frozen treats and pixelated perfection, Papa's Freezeria reigns supreme. This isn’t just another time-management game; it’s a carefully crafted blend of resource management, memory, and a surprising amount of creative expression. Let’s dive into what makes Papa's Freezeria so engaging and how you can become a master of frozen desserts. Gameplay: A Deliciously Complex Cycle The core of Papa's Freezeria lies in fulfilling customer orders. You start with a blank slate – a fresh summer day, a vibrant beachside location, and the looming pressure of a hungry crowd. Each customer arrives with a unique order, displayed in a handy ticket. This is where the fun (and the challenge!) begins. The game is structured around four distinct stations, each requiring your focused attention: The Order Station: This is your command center. Here, you greet customers, take their orders, and carefully record their specifications. It's crucial to pay close attention to details like sundae size, specific syrups, blend times, and desired toppings. Mistakes here can cost you valuable tips and, more importantly, customer satisfaction! The Build Station: This is where the magic happens. You'll select the appropriate sundae cup size and then carefully add the requested ice cream flavors. Precision is key here, as overfilling or underfilling the cup will negatively impact the final product. The game utilizes a sliding bar, requiring a delicate touch to get the portions just right. The Blend Station: Once the ice cream is loaded, it's time to blend it all together. This stage involves a timer and a blend gauge. You need to hold down the blend button for the correct amount of time, indicated on the order ticket. Over-blending can lead to a messy, undesirable consistency, while under-blending leaves lumps and unhappy customers. The Topping Station: The final flourish! Here, you adorn your frozen masterpiece with a dazzling array of toppings, from syrups and sauces to sprinkles, cherries, and whipped cream. Like the Build Station, precision is paramount. You'll need to use your mouse to carefully position each topping according to the customer's specifications. Getting the perfect swirl of whipped cream or placing the cherry just right can be surprisingly satisfying. Once you've completed all four stations, you present the sundae to the customer. They'll rate your creation based on accuracy and presentation, awarding you a score and a tip. These tips are crucial for upgrading your shop with new equipment, decorations, and even character customizations! As you progress, the game throws in new challenges, including more complex orders, demanding customers, and special ingredients. You'll also unlock new characters, each with unique starting stats and preferences, adding another layer of depth to the gameplay. Tips for Freezeria Success: From Novice to Pro While Papa's Freezeria is easy to pick up, mastering it requires a bit of strategy and attention to detail. Here are some tips to help you become a frozen dessert tycoon: Prioritize multitasking: Learn to juggle multiple orders at once. While waiting for ice cream to blend, you can start taking the next customer's order or begin topping a previous sundae. Efficient multitasking is key to keeping the line moving and maximizing your earnings. Memorize common orders: As you play, you'll notice that certain orders appear more frequently than others. Try to memorize these common combinations to speed up the ordering process. Upgrade wisely: Don't just spend your tips on the shiniest new decorations. Focus on upgrades that improve efficiency, like faster ice cream dispensers or a better blender. These upgrades will have a more significant impact on your overall performance. Master the mini-games: Papa's Freezeria features a variety of mini-games that can be played after each workday. Winning these games earns you tickets, which can be redeemed for valuable prizes, such as new outfits, ingredients, and decorations. Pay attention to customer preferences: Each customer has unique preferences and quirks. Some prefer specific ice cream flavors, while others are particularly picky about toppings. Pay attention to these details to earn higher scores and bigger tips. Don't be afraid to experiment: Try out different combinations of ingredients and toppings to discover new and exciting sundaes. You might just stumble upon a winning recipe! Conclusion: More Than Just an Ice Cream Game Papa's Freezeria, accessible via is more than just a simple store management game; it's a carefully crafted experience that combines engaging gameplay with a charming aesthetic. It’s a testament to how simple mechanics, when combined with thoughtful design and a touch of addictive fun, can create a truly memorable gaming experience. So, grab your virtual scoop and get ready to dive into the world of frozen desserts. You might just find yourself hooked! https://papasfreezeriagame.io

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Where Do You Find Genuine Essay Writing Help Services These Days?
by teves20525＠binafex.com 22 Jul '25

22 Jul '25

I’ve been on the lookout for reliable essay writing help services but finding a trustworthy one feels like searching for a needle in a haystack. With so many websites out there, it's hard to know which ones actually deliver quality work. Some look promising but fail to meet deadlines or maintain originality. Has anyone had a positive experience with any service lately? How do you even verify if they provide proper academic support and not just copy-paste material? Also, have you ever used platforms that offer both essay assistance and primary homework help? Would love to hear your honest thoughts and recommendations. Visit here: https://eazyresearch.com/services/primary-homework-help

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Level Up Your Lunch Breaks: Running a Virtual Store in Pacman 30th Anniversary (and Why It's More Addictive Than You Think)
by developed.prawn.zuyd＠letterprotect.net 22 Jul '25

22 Jul '25

We all know Pacman 30th Anniversary as the iconic arcade game that launched a thousand pixels. But beyond the ghost-dodging and pellet-munching, the 30th anniversary version offers a little something extra: a surprisingly engaging, if simple, store management game. It might sound strange, but trust me, it's a fun little distraction for those moments when you need a break from the serious stuff. Think of it as a mini-business simulator nestled inside a classic. It’s not going to be a deep dive into financial modeling or complex supply chain management, but it will test your ability to prioritize, strategize, and efficiently use limited resources. In short, it's a surprisingly rewarding way to spend your lunch break. This article isn't about becoming a virtual retail tycoon. It's about exploring this hidden gem within a familiar game and understanding how to get the most enjoyment out of its simple, yet satisfying, gameplay loop. Ready to trade in your joystick for a managerial hat? Let's dive in! The Ghostly Grocery: Understanding the Gameplay The store management aspect of Pacman 30th Anniversary is pretty straightforward. The goal? To attract customers, sell them goods, and upgrade your store to attract even more customers. You're essentially running a retro-themed convenience store – think of it as a pixelated 7-Eleven, only slightly more haunted. Here's how it works: Attracting Customers: Initially, you need to attract customers to your store. You do this by purchasing and placing various decorations and attractions outside your store. Think colorful posters, inviting plants, or even a giant Pac-Man statue (because, why not?). Each item has a "customer attraction" rating, influencing how many potential shoppers wander in. Stocking Your Shelves: Once customers arrive, they need something to buy! You'll need to purchase and place shelves inside your store. Then, you stock these shelves with different products, ranging from simple fruits and vegetables to more elaborate (and expensive) items. Each product has a "popularity" rating, determining how quickly it sells. Managing Your Resources (aka Money!): Everything costs money. Attracting customers, stocking shelves, upgrading your store - it all drains your virtual wallet. You earn money by selling goods to customers. The key is to balance attracting customers with having enough products to sell, ensuring a steady income stream. Upgrading Your Store: As you earn more money, you can upgrade your store. This allows you to purchase more shelves, display larger quantities of products, and ultimately attract even more customers. Upgrading is essential for increasing your overall profitability and reaching higher levels. Dealing with the Inevitable Glitches: While the game is relatively simple, sometimes things don't go exactly as planned. Customers might get "stuck," shelves might glitch, and sometimes the game simply doesn't register a purchase. Don't panic! A quick refresh of the page usually fixes any issues. Tips and Tricks for Mastering the Pixelated Produce Aisle While the gameplay is intuitive, a few strategic moves can significantly boost your virtual store's success. Here are some tips to help you become a store management pro in Pacman 30th Anniversary: Focus on Early Attraction: In the beginning, prioritize attracting customers over stocking a massive inventory. A few shelves with popular items are better than a store full of products and no one to buy them. Focus on buying the cheaper attraction items first to quickly increase your customer base. Diversify Your Inventory (Gradually): As you earn more money, gradually diversify your product offerings. Offering a wider variety of items will appeal to a broader range of customers and keep them coming back for more. Don't go overboard initially, though! Start with a few popular items and expand from there. Strategic Placement is Key: Pay attention to where you place your decorations and shelves. Cluttering the entrance with decorations might look nice, but it could hinder customer flow. Make sure there's enough space for customers to navigate the store efficiently. Don't Neglect Upgrades: Upgrading your store should be a constant goal. More space means more shelves, which means more products, which means more money! Prioritize upgrades that increase overall capacity over those that only offer minor aesthetic improvements. Experiment and Observe: There's no "perfect" strategy. Experiment with different product combinations, decoration placements, and upgrade paths to see what works best for your store. Pay attention to what's selling quickly and adjust your inventory accordingly. Refresh When Necessary: If you find yourself with a sluggish game or persistent glitches, a quick refresh can often resolve the issue and get your store back on track. Conclusion: A Simple Joy in Pixelated Form The store management game within Pacman 30th Anniversary isn't going to replace your favorite AAA title. It's not designed to be a complex, deeply strategic experience. What it is, however, is a surprisingly addictive and engaging way to spend a few minutes (or hours!) relaxing and having fun. It’s a simple pleasure, a distraction that allows you to exercise your problem-solving skills in a low-pressure environment. So next time you find yourself needing a break, give it a try. You might just be surprised at how much you enjoy running your own little pixelated store! https://pacman30thanniversary.io

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OpenBSC July 2025