LaF0rge

LaF0rge, 8 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, 12 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, 21 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, 25 days ago to Leipzig

Either I'm going to the super unpopular venues/acts, or this years Wave-Gotik-Treffen has a surprisingly low turnout. In any case, enjoying amazing music across so many genres. #wgt2024 #leipzig

LaF0rge, 28 days ago to linux

Some code related to "PFCP offloading" or "PFCP tunneling" has just appeared in mainline linux. Oddly enougn PFCP is not a tunneling protocol, and the code itself claims its not implementing PFCP. Trying to find out more about it: https://lists.openwall.net/netdev/2024/05/15/95 #linux #3gpp #telecom - if anyone knows more, I am very curious.

LaF0rge, 1 month ago to random

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

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LaF0rge, 1 month ago to random

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

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, 2 months ago (edited 2 months ago) to random German

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, 3 months ago to Palm

Rescued yet another old smartphone (Palm Treo) whose rubery plastic has become sticky/goo-ey (de-polymerization) by using an ultrasonic bath with Tickopur TR14, a chemical intended for removing flux residue from circuit boards #retronetworking #palm #gsm

back panel of a Palm Treo whose rubber coating has estensive de-polymerisation (became goo-ey)
back-panels of Palm Treo after removing de-polymerized goo-ey coating using Tickopur TR14 in an ultrasonic bath

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 (edited 3 months ago) to random

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, 3 months ago to random

Big photo session taking high-res photos of each and every circuit board in a #Siemens EWSD #ISDN switch yesterday. Will all go to the #retronetworking wiki after editing.

Siemens EWSD CCG11A
Siemens EWSD MH-SIMP
Siemens EWSD CMYM

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, 4 months ago to random

I just received an invoice from ITU
(International Telecommunications Union). Their letterhead states a TELETEX number (in 2024!). I love it. #retronetworking - now I seriously wonder how I might be able to get connected to a public network that can reach it.

LaF0rge, 4 months ago to random

one of the more fascinating #ISDN video phones I've seen: https://osmocom.org/projects/retronetworking/wiki/7e_Communications_(Motionmedia)_Talking_Head_VideoReporter #retronetworking - thanks to WIMPy for sharing!

7e Communications (Motionmedia) Talking Head VideoReporter: View of the phone screen, remote control and codec unit removed from ruggedized pelicase.
7e Communications (Motionmedia) Talking Head VideoReporter: View of the PCB stack inside the codec unit.

LaF0rge, 4 months ago to random

#osmocom pySim will soon have GlobalPlatform SCP02 and SCP03 support. Code is already working against real cards but needs cleanup: https://gerrit.osmocom.org/c/pysim/+/35462 and https://gerrit.osmocom.org/c/pysim/+/35793 #simcards #gsm #3gpp

LaF0rge, 4 months ago to croatia

Is there anyone among my followers from #croatia who would be willing to buy a retro ISDN phone on aukcije.hr and send it to me in Gemany? Just a phone, nothing large/heavy. #retronetworking #followerpower

LaF0rge, 4 months ago to Electronics

Interesting to see the enormous scale at which JLCPCB is manufacturing circuit boards in this Video touring the factory https://m.youtube.com/watch?v=jTBOSob5MLg #electronics #pcb #makingof

LaF0rge, 4 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, 5 months ago to random

I finally got my proof-of-concept (and world wide first open source) SM-DP+ for consumer eSIM to work. This is the component from which the eUICC (chip in phone) downloads encrypted eSIM profiles. Code at https://gerrit.osmocom.org/c/pysim/+/35461 - will be merged to pysim master soon. #GSMA #3gpp

LaF0rge, 5 months ago to random

Am I the only one wondering why (at least high-end business) laptops still don't have SFP+ or QSFP28 slots these days?

LaF0rge, 5 months ago to random

sigh. Trying to implement ECDSA signature verification to match what happens between SM-DP+ and eUICC (in GSMA consumer eSIM) but I'm horribly stuck. [was so frustrated that I wenta and implemented SCP02 crypto meanwhile]. It works for the serverSignature1 initiateAuthenticationRes but fails for the smdpSigned2 in authenticateClientRes :(

LaF0rge, 5 months ago to random

Teardown of Tandbeg TTC6-01 ISDN Video codec for conference rooms: https://osmocom.org/projects/retronetworking/wiki/Tandberg_TTC6-01 #retronetworking (6xBRI + 2xPRI is serious #isdn

picture of VGA + ISDN extension board of Tandberg TTC6-01 ISDN video codec
picture of connector / rear side of Tandberg TTC6-01 ISDN video codec

LaF0rge, 5 months ago to random

celebrating xmas by taking + publishing pictures of #retronetworking equipment. So far mostly Siemens FastLink, see https://osmocom.org/projects/retronetworking/wiki/Siemens_FastLink and its child pages. This is how PDH networks were built ~25 years ago.

Siemens FastLink LT2ME1 with 2x UG2 modules
Siemens FastLink ULAF+ STU - a SHDSL CPE for ISDN PRI and leased 2MBps lines
Siemens FastLink LTO-LT