#telecomhistory — Public Fediverse posts

History of Telecommunications T-Carrier

https://computer.rip/2025-09-20-T-carrier.html

#HackerNews #History #Telecommunications #TCarrier #TelecomHistory #TechHistory

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

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

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

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

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

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

My new bedtime reading has arrived…

In the UK, AC13 telephone signalling used pulses of 2280Hz to represent the digits of a dialled phone number, call progress state etc.

This training document from 1983 was pretty late in the lifespan of in-band signalling like this, which had been around for 20+ years by this point.

It’ll be fun reading this from a “what would it do if I poked $thing at $time” point of view

#telephoneHistory #telecomHistory #telephone #telecoms #phreak #phreaking #phones

Oh yeah! I was posting Christmas telephone stuff this month wasn't I..

On Friday I mentioned that The Hull Corporation telephone company launched their Santa service.

Well, here are three examples of the recorded messages that kids could dial up and listen to:

https://www.youtube.com/watch?v=rI4Gt5YKAWs

https://www.youtube.com/watch?v=zvpTfQCNP7o

https://www.youtube.com/watch?v=wBEmAsACQc4

#telephone #phone #telephoneHistory #telecom #telecoms #telecomHistory #TelephoneHistory #vintagePhone #telephoneExchange #phoneExchange #Hull #kcom

Christmas at Haywards Heath Telephone exchange 1953

Lots of paper garlands and decorations adorning the CB10 switchboard here, but if you look closely there are paper santas/elves hanging from the cable turning sections where the positions wrap around the corners of the room.

Thanks to Stefan on the "UK Switchboards" facebook group for finding it.

#telephone #phone #telephoneExchange #PhoneExchange #TelecomsHistory #telecomHistory #switchboard #operator

Newspaper article from the "Mid Sussex Times" published in 1949.

These telephone operators at Hassocks (UK) really went all out decorating the switchboard, it's quite impressive!

Thanks to Stefan on the "UK Switchboards" facebook group for finding it.

#telephone #phone #telephoneExchange #telephoneSwitchboard #switchboard #operator #telecom #telecoms #telecomHistory

Test shot for a video I’m planning at the moment. I thought it was too pretty to keep to myself… so it’s here with no context 😀

#TelephoneExchange #Strowger #PhoneExchange #relay #Telecoms #TelecomHistory

What’s this mystery object stuck to my telephone?

https://youtu.be/F8R8rWIt2yI

#Phone #telephone #TelephoneHistory #telecom #telecoms #TelecomHistory #vintage #vintagePhone #vintageTelephone #vintage #mysteryObject

I love the art style on this poster produced by Post Office Telecomunications in the UK.

These posters would have been at least A2 in size, and were available to schools to help teach students how to use the telephone.

I'm not sure of the date, but I would guess late 60s - early 70s.

This poster, and more can be found here: http://www.samhallas.co.uk/repository/documents/wall_charts.pdf

#Telephone #TelephoneHistory #GPO #telecom #telecoms #telecomHistory #TelecomsHistory #Poster #telephoneExchanges #TelephoneExchange

The Museum of Internal Fire have posted an end-of-season walkthrough of their radio and telephone exchange shed.

https://fb.watch/o1LNxL5Ang/

Sorry about the FB link, but I couldn’t find it on any other video platforms 🙁

#MuseumOfInternalFire #Telephone #Strowger #ElectroMechanical #telephoneExchange #Telecoms #TelecomHistory #HamRadio #AmateurRadio #BoatAnchor #phreak #Phreaking

Look Mum No Computer has been rearranging his #UAX13 #strowger #TelephoneExchange to make better use of the space and squeeze in a couple more racks.

It’s a substantial effort to go to, must have been a busy week, but it looks like they got quite a lot done!

https://m.youtube.com/watch?v=tK1lH8pjXTo

One day I’ll make the 6hr drive to go visit…

#telephone #CentralOffice #telecoms #TelecomHistory #LMNC #phreak #Phreaking #ElectroMechanical

Look Mum No Computer has been rearranging his #UAX13 #strowger #TelephoneExchange to make better use of the space and squeeze in a couple more racks.

It’s a substantial effort to go to, must have been a busy week, but it looks like they got quite a lot done!

https://m.youtube.com/watch?v=tK1lH8pjXTo

One day I’ll make the 6hr drive to go visit…

#telephone #CentralOffice #telecoms #TelecomHistory #LMNC #phreak #Phreaking #ElectroMechanical

Look Mum No Computer has been rearranging his #UAX13 #strowger #TelephoneExchange to make better use of the space and squeeze in a couple more racks.

It’s a substantial effort to go to, must have been a busy week, but it looks like they got quite a lot done!

https://m.youtube.com/watch?v=tK1lH8pjXTo

One day I’ll make the 6hr drive to go visit…

#telephone #CentralOffice #telecoms #TelecomHistory #LMNC #phreak #Phreaking #ElectroMechanical

Look Mum No Computer has been rearranging his #UAX13 #strowger #TelephoneExchange to make better use of the space and squeeze in a couple more racks.

It’s a substantial effort to go to, must have been a busy week, but it looks like they got quite a lot done!

https://m.youtube.com/watch?v=tK1lH8pjXTo

One day I’ll make the 6hr drive to go visit…

#telephone #CentralOffice #telecoms #TelecomHistory #LMNC #phreak #Phreaking #ElectroMechanical

Got some dirty #telephone #switchboard plugs you need to clean up? You need a Bell System Plug Polisher 497A!

https://m.youtube.com/watch?v=PtGYEqkrYxw

I don’t think we had an equivalent in the UK, but now I really want one!

#TelephoneExchange #PhoneExchange #TelecomHistory #phone

Woohoo! I now own the right vintage kit to operate an AC-14 signalling link (UAX “out of area” exchange lines)

This signalling system relied on in-band 2280Hz tones, and although its design wasn’t quite as open to abuse as the American 2600Hz equivalent signalling, this equipment did have vulnerabilities

So, once I’ve got it working in captivity I intend to have lots of fun trying to #phreak it!

#telephone #TelephoneExchange #TelecomHistory #Telecoms #PhoneExchange #phone #strowger