@LaF0rge@chaos.social avatar

LaF0rge

@LaF0rge@chaos.social

#Osmocom founder. Mobile Communication expert. Former Linux kernel hacker, freedom fighter. Nerd. #retronetworking. Mensch mit Kommandozeilenhintergrund. searchable via tootfinder. Director of https://mastodon.social/@sysmocom

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Laird_Dave, to random German
@Laird_Dave@chaos.social avatar

Wertes Folg,

ich suche jemanden, der*die mir über die Technik des Handynetzes (und die Herausforderungen dahinter) was erzählen kann und mag. Eventuell als Format 60min Talk + 30min Q&A, fully remote.

Hintergrund der Anfrage: wir diskutieren im drüber, ob wir entsprechende Fähigkeiten aufbauen sollten.

Außer meiner Dankbarkeit und vielleicht in ferner Zukunft mal höherer Leistungsfähigkeit des THW kann ich leider nicht viel anbieten. Kaltgetränk auf dem nächsten Chaos-Event vllt.?

LaF0rge,
@LaF0rge@chaos.social avatar

@Laird_Dave @rince @wonka Die leute vom @c3gsm machen den Netzbetrieb auf den CCC-events - von 2G ueber 3G bis 4G und ganz zuletzt sogar auch schonmal testweise 5G. Vielleicht ist das eine Anlaufstelle? Ich kann Dir viel ueber protokolle, schnittstellen, standards und technik erzaehlen, aber das ist alles gefuehlt ein paar ebenen zu low-level fuer Deine Anfrage.

LaF0rge, to random
@LaF0rge@chaos.social avatar

I'm always surprised how much fun it is to debug mechanical problems instead of IT problems. I need more spare time for car and motorbike servicing. Today: engine oil leak due to [probably improperly installed] shaft seal

image/jpeg
image/jpeg

LaF0rge,
@LaF0rge@chaos.social avatar

@cristianyxen I did service motorbikes (and still do) for decades, servicing cars never really felt as much fun, but it seems lately I'm getting the hang of it. I still really dislike driving them, though.

LaF0rge, to random
@LaF0rge@chaos.social avatar

Time for some relaxing car repairs (I really do enjoy mechanical work while listening to podcasts). Mh, no wonder this shaft seal doesn't really seal anything

purpleidea, to random
@purpleidea@mastodon.social avatar

@LaF0rge Do you know if I can purchase a single eSIM and install it on two different cards:

Even if only one would be able to connect to the network at the same time.

When I've bought eSIM's they come with warnings that they can't be moved to a different device, not sure if there's some sort of UUID from the eUICC that locks that ID to the purchased eSIM.

The goal is to have one eSIM in laptop and same account on phone. Only using one at a time is fine w/o card swap

https://shop.sysmocom.de/sysmoEUICC1-eUICC-for-consumer-eSIM-RSP/sysmoEUICC1

LaF0rge,
@LaF0rge@chaos.social avatar

@purpleidea Absolutely not. What you are proposing is fundamentally against what SIM cards (as well as eSIM profiles) are designed for. They explicitly are made to prevent duplication/cloning. Many operators offer subscriptions that include/permit multiple [e]SIMs in the same account. They have separate IMSIs but are accounted to the same subscription. I use that for laptop+phone.

LaF0rge,
@LaF0rge@chaos.social avatar

@purpleidea technically there is a procedure for migrating an eSIM profile from one eUICC to another. As that involves the SM-DP+ server, you require its cooperation/approval when doing so. So the eSIM profile issuer (often SaaS on behalf of the mobile operator) can allow or prevent it based on policy.

LaF0rge,
@LaF0rge@chaos.social avatar

@purpleidea I am not really an expert in subscriptions/plans. I'm using Vodafone Germany here, where multiple SIMs in one contract/plan are supported for as long as I can remember.

LaF0rge, to random
@LaF0rge@chaos.social avatar

short video clip on 125 years of TELENORMA (historical German telecommunications manufacturer): https://www.youtube.com/watch?v=QVzSzFKywL4 #retronetworking #telephony

LaF0rge,
@LaF0rge@chaos.social avatar

@malte I didn't even know TN made desktop PCs at some point. It's quite common for equipment from that pre-www period to not have any information online. Unless there's some collector documenting it, like we do for telecom equipment at https://osmocom.org/projects/retronetworking/wiki/Retronetworking -most of that also has no other information about it.

LaF0rge,
@LaF0rge@chaos.social avatar

@malte it's quite usual for material (data sheets, marketing material, manuals) from equipment designed in the pre-internet days like a 286 class PC to never have existed in digital form. And even a lot of technology from the mid to late 90s often is not well documented/preserved on the internet as mass storage was still very expensive, companies went bankrupt, etc.

LaF0rge, to random
@LaF0rge@chaos.social avatar

Looking forward to the Osmocom Developer Conference starting tomorrow - that means meeting lots of old and new friends as well as an exciting schedule of technical talks. Schedule at https://pretalx.sysmocom.de/osmodevcon2024/schedule/ - most of them will be recorded and published by @c3voc

alda, to opensource
@alda@topspicy.social avatar

A lot of resources about the legalities of licences are extremely US-centric.

Where are the articles and papers on the application of the GPL in European legal systems?

(The EUPL is cool, but doesn't apply in my case.)

LaF0rge,
@LaF0rge@chaos.social avatar

@alda a lot of GPL enforcement out and in court has happened specifically in Germany. There is also excellent German legal literature on the topic like the famous Jaeger/Metzger book.

LaF0rge, to random
@LaF0rge@chaos.social avatar

In recent years (since 2018) there were a number of court cases in China related to the and other copyleft licenses. For a (chinese) list/summary, see https://www.openatom.org/law/database - the only sad part is that all of them about damages claims between companies; no community-oriented enforcement.

LaF0rge, to random
@LaF0rge@chaos.social avatar

On my way to for the @fsfe Legal and Licensing Workshop 2024 https://fsfe.org/activities/ln/llw-conf.en.html. First time for me after a few years, looking forward to meet many FOSS legal experts again!

LaF0rge, to berlin German
@LaF0rge@chaos.social avatar

Weil eine Webseite/Datenbank nicht mit der erforderlichen verfuegbarkeit bereitgestellt werden konnte, gibt es kein Funkzellenabfragen-Transparenz-system in mehr? Das ist ja auf @derpostillon Niveau, nur dass es real ist @vieuxrenard [ich weiss, bin spaet dran das aus dem Januar erst jetzt zu merken] https://www.berlin.de/sen/justv/presse/pressemitteilungen/2024/pressemitteilung.1406005.php

LaF0rge, to random German
@LaF0rge@chaos.social avatar

Falls jemand ein Ticket zum Festakt "125 Jahre TLEENORMA" (https://125jahre-tn.de/) am 13.4. in Frankfurt/Main haben will: Ich kann aus Zeitgruenden nicht und haette ein Gala Ticket [guenstig] abzugeben.

LaF0rge, to random
@LaF0rge@chaos.social avatar

The next incarnation of RetroNetCall, our monthly virtual get-together of enthusiasts is happening again today at 20:00 CEST. See https://osmocom.org/news/253 for the announcement. No presentation, but live debugging of the dialplan of our yate based ISDN softswitch called "DIVF".

LaF0rge, (edited ) to random German
@LaF0rge@chaos.social avatar

Unvorstellbar, wie #cocacola Anzeigen 1938 in Deutschland aussahen. "Herstellerfirma rein arisch und deutsch!". (Quelle: https://druckschriften-digital.marchivum.de/zd/periodical/titleinfo/420689, CC-BY-NC-SA)

LaF0rge,
@LaF0rge@chaos.social avatar

@promovicz Ja, siehe https://en.wikipedia.org/wiki/Fanta

LaF0rge, to architecture
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Video recording of last nights presentation "A Brief Architectural History of Telephone Exchange Buildings" by Lisa Kinch has just been published by @telecomheritage at https://vimeo.com/922814546/20faf58338

promovicz, to random
@promovicz@chaos.social avatar

Wondering why there is no such thing as HTTP-over-USB or HTTP-over-Bluetooth, because it would vastly improve device interactions.

LaF0rge,
@LaF0rge@chaos.social avatar

@henryk @promovicz HTTP over TLS over ISO7816-3 (SCP81) is widely deployed and used in the SIM card industry. However, most cards are not accessed over USB-CCID. And the HTTP payload is of course usually not Web pages but [ironically] often itself ISO7816 APDUs for remote file Management or remote application Management. And the card is the HTTP client, unlike the [dead] SCWS.

foone, to random
@foone@digipres.club avatar

I finally lugged my Highscreen SkyTower AT tower up to my office. This machine is beautiful, even when it's yellowed and dusty and grimy and rusty.

LaF0rge, (edited )
@LaF0rge@chaos.social avatar

@foone what kind of modem form-factor is this? I couldn't recognize it from the picture. - ah nevermind you just did a photo of parts of the isa slot bracket, not the modem itself

LaF0rge, to random
@LaF0rge@chaos.social avatar

yesterday and today marks the first time we've transmitted Telefax G4 over our OCTOI #retronetworking community ISDN-over-IP network using an actual historical G4 capable fax machine (Canon FAX-L260i) - the machine itself can print D- and B-channel protocol traces!

LaF0rge,
@LaF0rge@chaos.social avatar

thanks to @manawyrm for being the remote (software G4 fax) endpoint for sending/receiving G4 fax over OCTOI

LaF0rge, (edited ) to random
@LaF0rge@chaos.social avatar

The next incarnation of RetroNetCall, our monthly virtual get-together of #retronetworking enthusiasts is happening again this week (March 6th) at 20:00 CET. See https://osmocom.org/news/249 for the announcement. It features a presentation on G4 Telefax protocol trace decoding. (G4 is the rarely used digital-only telefax service used over ISDN)

LaF0rge,
@LaF0rge@chaos.social avatar

RetroNetCall on Facsimile Service Group 4 (G4 Fax) starting now at https://osmocom.org/RetroNetCall

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