Vadim Yanitskiy (@[email protected])

As someone learning Erlang / Elixir for telecom applications, this is an interesting read about Ericsson's use (or lack) of the language they created. iknek.github.io/blog/the-erlan…

my take on recent regrettable events in the #linux kernel community. laforge.gnumonks.org/blog/20241025-…

"DebugMux: getting baseband logs from old Sony Ericsson phones" video recording of #osmocom #OsmoDevCon2024 has been released media.ccc.de/v/osmodevcon20… @axilirator #3gpp #cellular - thanks @c3voc

"GPRS support in osmocom-bb" video recording of #osmocom #OsmoDevCon2024 talk by @axilirator and pespin has been released media.ccc.de/v/osmodevcon20… #gsm #3gpp #telecom - thanks to @c3voc

Just before the end of the Osmocom Developer Conference 2024 we managed to demo a GSM Fax transmission using osmo-{trx,bts,bsc,mgw,msc,stp} as network:youtube.com/watch?v=rfDxGZ… - Thanks to @axilirator for his work and @Manawyrm for recoding. #osmocom #retronetworking

Amazing talk at #OsmoDevCon by Michael Iedema of AMN today on real-world deployments using Osmocom 2G+3G: 1420 osmo-bts sites (4TRX each) in 11 countries via 17 osmo-bscs reliably serving 6.2 million call minutes per day!

After several unsuccessful attempts, I finally booked the flight tickets for OsmoDevCon 2024.

@domi007 I mean, it kinda works but then sporadically breaks in the middle of booking process. They put a banner about technical limitations.

@axilirator It seems to work for me, just tried it. Maybe your source IP is not liked by AWS edge? :(

The web site of #lufthansa is so broken. Trying to buy tickets and getting this 2nd day already. This is unacceptable.

@darklordoflinux I am happy to share if you want to play with those fw builds. Find the link in DM.

Playing with dev/debug firmware builds for old Sony Ericsson phones. Took some screenshots with SE T700 (R3CA017 prg12099072_DEV_RM) today.

This firmware also comes with some J2ME apps, like TckRunner. The purpose is yet unknown.

The famous Easter egg is still there.

A lot more settings are available via DebugMux "Interactive Debug" DPs: gitea.osmocom.org/fixeria/sedbgm… and gitea.osmocom.org/fixeria/sedbgm….

Only a limited part of the functionality was accessible without the PIN code, but fortunately I managed to bruteforce a 4-digit PIN. The setup is based on 10 optocouplers (CNY17-2) and looks messy (lots of wires), but it worked.

I was asked to help with recovering PIN code of a DS1971 iButton programmer called "ПКД-2". This is a custom ATmega based device for managing paid elevator access (yes, paid elevators are the thing in East Kazakhstan). youtube.com/watch?v=eEQHMz…

yay, #wireshark devs finally merged AMR audio codec decoding patch (gitlab.com/wireshark/wire…). You can now play backAMR-in-RTP VoIP calls in wireshark, for example those originating or terminating in 2G cellular networks!

Scanning #retronetworking books the destructive way: First cut the spine of the book and then feed it through a rather professional document scanner at amazing speed.

Nice and really interesting talk about the predecessor of GPRS in GSM networks. Definitely recommend watching, recording is available. downloads.osmocom.org/videos/osmodev…

In this *specific* example, yes, there will be no padding between the fields of nested struct b. Not because the `packed` attribute applies to nested structs (it does not), but simply because struct b needs not to be padded. If you put a char, there will be padding.

"GPT kiddie" should become a new term for those thoughtlessly relying on ChatGPT when writing code.