LaF0rge

LaF0rge, 24 days ago to random

CompilerFax: Sending C source code via telefax to a compiler-as-a-service which then faxes you the output of your program; demo: https://www.youtube.com/watch?v=pJ-25-pRhpY git: https://github.com/lexbailey/compilerfax intended for #emfcamp #retronetworking #whatagreathack

LaF0rge, 9 months ago to random

Recording of my talk "demystifying eSIM technology" at #cccamp23 now available from https://media.ccc.de/v/camp2023-57190-demystifying_esim_technology - thanks to @c3voc

LaF0rge, 1 year ago to random

Started to implement a use-count based system for powering up/down build hosts and other lab CI hardware infrastructure on demand, rather than running things 24/7 wasting power: https://osmocom.org/issues/6023 - please let me know if I'm reinventing the wheel and this already exists elsewhere?

LaF0rge, 10 months ago to random

After two stressfull days, the ISDN+POTS network at #cccamp23 seems to be running since last night. Jolly found the last remaining mystery of why the Uk0 interface didn't provide phantom voltage, that's resolved now. Current PoPs at DK Q8, DK Q13 and POC. https://osmocom.org/projects/retronetworking/wiki/ISDN_at_CCC_Camp_2023

LaF0rge, 6 months ago to retrocomputing

does anyone have experience in removing "decomposing old rubbery plastic" (rubber reversion) in an ultrasonic bath? What kind of solvent would you recommend? Want to completely remove it from old phones etc. #retrocomputing #retronetworking #followerpower

LaF0rge, 9 months ago (edited 7 months ago) to random

#cccamp23 ist wunderbar. Aber den Leuten jeden Tag eintrichtern, sie sollen >= 6h pro Nacht schlafen, trotzdem dann Musik bis mindestens 2.30h erlauben, und gleichzeitig Engel um 6:30h zum "Flaschen einsammeln und auf Anhänger werfen" einteilen und ab 7:00 das Geräusch von Verbrenner-betriebener Hydraulik (Radlader? Müllabfuhr?) passt einfach nicht zusammen.

LaF0rge, 9 months ago to random

I just noticed that there is a (WIP) FOSS eSIM LPAd for Android out there: https://gitea.angry.im/PeterCxy/OpenEUICC https://snowy.day/35032/2022-05-08-esim-and-the-sad-state-of-aosp - in my #cccamp23 talk I mentioned the Google ChromeOS LPA as the only FOSS LPAd as I dodn't hear of OpenEUICC yet. #esim

LaF0rge, 10 days ago to hardware

Watched the excellent technical talk on USB4 (and related topics) by @MacLemon at #GPN22 https://media.ccc.de/v/gpn22-359-usb-wie-funktioniert-das-eigentlich-certified-usb4-version-2-0- Great speaker, good balance of technical and entertainment. I hope somebody will contribute english subtitles eventually. #usb #hardware #making

LaF0rge, 8 months ago to random

The back (backplane/cabling) side of the EWSD (1990s Siemens Digital telephony switch) after removing all the rack doors, before disassembly #retronetworking #EWSD

LaF0rge, 3 months ago to random

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, 3 months ago to random German

Hat jemand eine Idee, was man macht, wenn ein Haus einen bislang nicht genutzten BK-Anschluss im Keller liegen hat, aber #Vodafone (ex KDG) behauptet, es gibt an der Anschrift keinen? Ich hab Hausübergabepunkt mit eigenen Augen gesehen. Er ist da. Kennt jemand einen technischen Ansprechpartner auf Augenhoehe? #followerpower

LaF0rge, 6 months ago to Taiwan

Just finished reading the first chapter of "The Everything Blueprint" by James Ashton. The book is about the history of ARM, and the first 24 pages are an excellent summary of the role of #microchips in today's society/economy, the role of #Taiwan, the "silicon shield" theory etc. - not news at all for somebody like me, but an excellent write-up of what everyone should know about the topic.

LaF0rge, 6 months ago to random

Latest #retronetworking arrival in my collection of ISDN video telephones: A BT VS1 from the UK. Haven't yet tried to power it up; will first carefully disassemble and clean it.

type label of BT VS1 video phone
connectors of BT VS-1 video phone

LaF0rge, 5 months ago to retrocomputing

Documentary about the road from Palm PDAs to Handspring and its Visor + springboard slot leading to the experience of smartphones long before iPhone and Android. Makes me remember my Palm III, Palm V and visor times #retrocomputing https://www.youtube.com/watch?v=b9_Vh9h3Ohw

LaF0rge, 11 months ago to random

It appears the #GSMA is secretly editing specification documents without mentinoning it in the changelog or incrasing version numbers. I downloaded SGP.32 v1.0 some weeks ago and again downloaded it today. They differ, but it's still v1.0 and no changelog entry: https://gitea.osmocom.org/sim-card/gsma-esim-iot/commit/970c01fc136a63ddb0c3470f55a47fd6ec306d07

LaF0rge, 10 months ago (edited 7 months ago) to random

srsly? Auto voller schwerem equipment fürs ISDN am camp, und man wird heute nicht mehr aufs Gelände gelassen. Wenn das der Ernst ist, dann fahre ich wieder heim, dann kein Vortrag und kein ISDN am camp.#cccamp23

LaF0rge, 7 months ago to random

In case anyone wants to join me trying to debug a SS7/ISUP interconnect between a Siemens #EWSD and a #yate softswitch (in our OCTOI community TDMoIP network): I'll be doing some of that live at https://osmocom.org/RetroNetCall tonight at 20:00 CET. #retronetworking

LaF0rge, 11 months ago to debian

Is there any #Debian developer in my timeline that would be willing to do sponsor a non-debian maintainer for an updated sispmctl package? https://mentors.debian.net/package/sispmctl/ #followerpower @debian @shoragan

LaF0rge, 10 months ago to random

ROTFL: There actually is/was medication that they called ISDN (Isosorbid dinitrat): https://cdn.shop-apotheke.com/images/D02/747/140/D02747140-p12.jpg #isdn #retronetworking

LaF0rge, 7 months ago to random

Latest #retronetworking acquisition: One of the first commercially available #ISDN video telephones (this unit built in 1992, but I think the model is available 2-3 years longer). Apparently the "Telekom Bildtel 001" was built around a LOEWE MultiTel TV10 BTX terminal, plus an AEG/OLYMPIA codec unit and a TV camera.

Reat view of Bildtel 001 connectors (TV/BTX, codec unit)
Combined Keyboard and Receiver unit of Bildtel 001, inherited from LOEWE Multitel TV10 BTX terminal
Side view of internals of Bildtel 001 codec unit, showing power supply, 4 stacked mainboard and many add-in cards

LaF0rge, 2 months ago to berlin German

Weil eine Webseite/Datenbank nicht mit der erforderlichen verfuegbarkeit bereitgestellt werden konnte, gibt es kein Funkzellenabfragen-Transparenz-system in #Berlin 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, 10 months ago to random

Stickers for #cccamp23 have arrived. (This is ISDN marketing originally placed on German phone calling cards) #cccamp2023 #retronetworking

LaF0rge, 15 days ago to random

for decades, a lot of the #FOSSI worked on has been decades behind bleeding edge technology. Recently, I'm involved in FOSS implementing GSMA SGP.32 IoT #eSIM infrastructure. That's before there are even any production deployments at all, before there are even any proprietary implementations out there. Exciting!

LaF0rge, 8 months ago to random

Before and after pulling, untangling and individually tolling up hundreds of cables from the data center floor beneath the #EWSD #retronetworking

Data center floor with EWSD cabling removed

LaF0rge, 9 months ago to random

Sight. I know I own this rare book (100 years of telephone switching, volume 2) which is impossible to find below 200 USD... I know I didn't scan it yet, but I really cannot find it at all. Guess I need to scan more books faster so I have backups and there are fewer places in my home where #retronetworking books without backup could be located