Notices by CCC event ISDN/PSTN network (c3isdn@chaos.social)

@dercraig the PPP dialup should be 919800 - currently otherwise occupied and not sure i it's fully operational yet. Feel free to test and report.

@dercraig I still cannot reach the machine that hosts the raidius server. We'll have to wait for its owner (jolly) to get back to investigate. Until then the dialup via RAS server is out of service, sorry :/

@dercraig we had to disable PPP at 919800 for now, it causes a crash on another machine. Too busy with other fixes all across the #38c3 venue now, will revisit later.

@dercraig 919823 is not a PPP service, but the @ChaosPost terminal interface...

@dercraig @ChaosPost PPP is now working at #38C3, you can dial 919800 and should get IPv4 via NAT on some strange adresses. That was all that we could do after the many bugs we ran into.

This sticker showed up next to our EWSD exchange at #38C3 earlier today... @c3fax

The #38C3 c3isdn phonebook is made available via fax polling. Once we're operational on-site, you can poll the phonebook from your fax machine or faxmodem from extension number 919982 @c3fax

What wouldc#retronetworking with Modems, fax machines, ISDN, SDH and more be without the contemporary marketing materials... now reprinted as post cards, at the retronetworking assembly, part of the vintage cluster #38c3. Close to @ChaosPost with other post cards...

Today (well, yesterday by now) we managed to further complete our #38c3 SDH network consisting of STM1 add-drop-miltiplexers that carry the E1 based V5 interface from access networks to the EWSD #aufbauleaks #ISDN #retronetworking

Thanks to gruetzkopf we now already have 6 SDH ADM (add-drop multiplexers, specifically Ericsson/Marconi OMS860) deployed. We're using a SDH (synchronous digital hierarchy) backbone to transport the V5 interface of our #isdn between #EWSD and Access Multiplexers. See https://osmocom.org/projects/retronetworking/wiki/38C3_ISDN_Network_Architecture
#retronetworking #aufbauleaks

Our custom RJ45 break out boards for bringing out subscriber line ports [Uk0, ab] from the EKSOS V5 access multiplexers now have a custom laser face plate. They fit nicely into the shelf and reduce the need for manual wiring like before, see https://osmocom.org/projects/retronetworking/wiki/Nokia_EKSOS_N20_DIY_carrying_case - this is where subscribers at #38C3 will connect to.

Zum Einstimmen auf das ISDN-Netz auf dem #38C3 hier ein paar ISDN-Nachrichten von vor 34 Jahren. #retronetworking #ISDN

Ihr kommt zum #38c3 aber habt kein Zeitgenössisches Endgerät (Analoges Modem, Telefon, ISDN-Terminaladapter, Faxgerät) mehr, um Euch am @c3isdn #ISDN + Analogtelefon-Netz anzuschliessen? Deutschlandweit werden Faxgeräte gegen Abholung verschenkt. Schaut mal auf https://www.kleinanzeigen.de/s-handy-telekom/faxgeraete/sortierung:preis/c173+handy_telekom.art_s:faxgeraete oder anderen Kleinanzeigenbörsen und holt euch eines. Viel Spass am Faxgerät!

@sophie @evey our network is experimental, not for production purpose. Unrelated comment: I'd be very surprised if CCC events would ever consider deploying cashless payments unless there was a production quality source-available [auditable] system that does not give anyone the ability to track payments, equal to privacy of cash.

Make sure to bring your modems, fax machines, ISDN terminal adapters, phones, BTX terminals, Minitel, video phones and other #retronetworking gear to #38C3 and get connected to the on-site #ISDN network. More information at https://isdn-museum.de/ccc

Overall architecture of the @c3isdn ISDN/PSTN network and its interconnections to @eventphone, @c3gsm etc: https://osmocom.org/projects/retronetworking/wiki/38C3_ISDN_Network_Architecture

Fetching #ISDN subscriber line termination equipment for #38C3 from the attic of @LaF0rge s garage...

we hope you all bring your legacy PSTN/ISDN equipment (phones, fax machines, modems, ISDN terminal adapters, accoustic couplers, music codecs, ...!

Working on some proper marketing swag for the #38c3 #ISDN network

In case you didn't notice yet: #38C3 will have an actual 1990s circuit switched ISDN telephone exchange (Siemens EWSD) providing wired POTS and ISDN services on-site: https://youtu.be/qIpDiiJTZTA?feature=shared #retronetworking #ccc2024 #ccc #isdn