*1929* #Poland , city: #Krakow
Laying 19-hole double cable ducts using slings and placing them in the trench - east view. On the left, a fragment of the Main Post Office building; in the distance on the right, the side facade of the Press Palace at Wielopole Street 1

#telecom #telecomunication #TelecomHistory #history #cables #underground #oldphotos

T-carrier

Computers Are Bad
Ich war wieder bei golem.de im "Besser Wissen" Podcast zu gast, diesmal zum Thema "Geschichte des [hauptsächlich GSM] Mobilfunks. Das Ergebnis könnt ihr unter https://www.golem.de/news/podcast-besser-wissen-wie-der-mobilfunk-erwachsen-wurde-2509-200081.html hören. #retronetworking #gsm #cellular #mobilfunk #technikgeschichte #telecomhistory
Podcast Besser Wissen: Wie der Mobilfunk erwachsen wurde - Golem.de

Was GSM mit ISDN zu tun hat und wieso sich wohl kaum jemand den Erfolg des Mobilfunkstandards vorstellen konnte, besprechen wir im Podcast.

Golem.de
So, after spending two half days in a colocation filled with several decommissioned but fully complete [including software] Siemens #EWSD digital telephone exchanges, I am happy to report that two of them will be rescued. We've dumped the hard disks and done some initial disassembly. Full disassembly and relocation will happen in upcoming months. #retronetworking #isdn #TelecomHistory
on my way to Munich today. In the odd case that anyone local in my timeline feels like meeting up tonight, let me know.
For the curious: Reason for the visit is to inspect and backup a Siemens EWSD exchange and plan logistics of its upcoming move to the Dresden telecommunications museum. #munich #telecomhistory #retronetworking

Before smartphones and SIP, some phreakers worked magic with nothing but a lineman’s handset, a pair of alligator clips, and knowledge of where to tap in. By connecting directly to exposed phone wiring, often at a demarc box or inside a phone booth, they could make free calls, monitor lines, or explore the network. Some even wired up their own phones with modular connectors on one end and alligator clips on the other, turning any active line into a potential hacking terminal. It was low tech, but it worked, and it gave curious minds raw access to the heart of the phone system.

#Phreaking #TelecomHistory #AlligatorClipOps #LineTapping #AnalogHacking

At our next RetroNetCall on August 6th, 2025, we will welcome the former Lead Engineer of the SEL/Alcatel Sytem 12 digital telephone switch. If you have any interest in historical digital telephony switching, don't miss out on this opportunity:
https://discourse.osmocom.org/t/retronetcall-2025-08-06-sel-alcatel-system-12/2246 #retronetworking #isdn #telecom #telephony #telecomhistory
RetroNetCall 2025-08-06: SEL Alcatel System 12

[German version elow] At our next RetroNetCall on August 6th, 2025 we will have the pleasure of welcoming Mr. Langenbach-Belz, who was working at SEL (and later Alcatel) in a variety of technical management positions. He has been present throughout the the S12 (System 12) development from the very first architectural workshop on its design. The call will not contain a formal presentation, but is just a conversaiton about the history of System 12 and Mr. Langenbach-Belz involvement in it. In ...

Osmocom Discourse
If you know me, you know I love payphones. If you don’t, well—now you do.

I came across this beautiful Qwest Fortress payphone, perfectly preserved in a wooden wall-mounted cubby booth. You don’t see these in the wild much anymore, especially in such pristine condition. I couldn’t pass up the chance to grab a photo.

#Payphone #RetroTech #Phreaking #TelecomHistory #UrbanFinds

With my article today, discover the fascinating journey of German rotary dial phones and their impact on communication history 📞🇩🇪

Read my article here: https://discovermyeurope.eu/the-evolution-of-german-rotary-dial-phones-from-innovation-to-everyday-necessity/

#VintageTech #TelecomHistory #RotaryDial #GermanEngineering #ZylinderhausExhibit

The Evolution of German Rotary Dial Phones: From Innovation to Everyday Necessity

The history of German landline phones with rotating dials is a captivating tale of technological innovation and societal transformation. These devices, which once symbolised cutting-edge technology, have now become cherished relics of a bygone era. Early Innovations and Major Producers The rotary dial phone was first patented by Almon Brown Strowger in 1891. However, it [...]

Discover my Europe

If you're interested in this sort of thing (and who wouldn't be?!)

The whole notebook full of late 1950s UK telephone routing codes is online as a pdf here: https://paulseward.com/downloads/Telephony_Phreaking_Archive/TLA-FDY-TKZ.pdf

An OCR version will follow at some point in the handwavy future when I get around to it (if I don't forget).

#phreaking #preak #telephoneExchange #strowger #phoneExchange #telecom #telecoms #telecomHistory #telecomsHistory #phone #telephone