Now that Lil is allowed outside, she’s discovered my workbench in the #telephoneExchange #shed - so I gave in and put a blanket down for her.

All projects will now include 100% more kitty, and I have to be that bit more mindful when I’m closing up for the day

#CatsOfMastodon #hamShack #strowger #PhoneExchange

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

I’ve spent over a year been looking for a Mk1 operators console for my #isdx #TelephoneExchange…

I finally got one a few weeks back, but before I start trying to wire it up to the #PhoneExchange I wanted to give it a once over, and #GetTheBatteriesOut if needed!

It all looks good, no obviously leaky caps, no battery to remove, most of the chips are date coded 1986.

I’ve put it back together, and now I can proceed with sorting out the exchange end!

#phone #telephone #telecoms #vintagePhone

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

I'm in the process of moving a small #strowger #TelephoneExchange demonstration rack on to its next home.

Before I say goodbye to it, I thought I'd video a short tour...

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

#Telephone #TelephoneHistory #Phone #PhoneExchange #Telecoms #TelecomsHistory

I spent today at the #DeanForestRailway working on their #UAX13 #Strowger #PhoneExchange

We’re increasing the junction capacity between Norchard and Parkend (about 3 miles away) and I needed to trace out how the existing junctions are cabled, find the existing terminating equipment, run new cables, prepare new terminating selectors…

Yesterday was leg day at the gym, so I only got about 75% done before I couldn’t cope with the step ladder any longer!

#phones #telephone #TelephoneExchange

https://www.youtube.com/watch?v=eo69Hwqg8IA

Newsreel coverage of the British Post Office launching their "mobile telephone exchange" in 1939

This was a complete #strowger #TelephoneExchange built into a trailer.

It was designed to provide service if the existing exchange suffered damage (fire, storm, gas explosion etc) or as a temporary measure while an exchange was upgraded or extended.

#telephone #Phone #PhoneExchange #TelecomsHistory

1/🧵

Lovely YouTube demo of by an Ericsson XY selector, from an #ElectroMechanical #TelephoneExchange

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

#Telephone #Phone #PhoneExchange #Telecoms

Lovely YouTube demo of by an Ericsson XY selector, from an #ElectroMechanical #TelephoneExchange

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

#Telephone #Phone #PhoneExchange #Telecoms

Are there any #Telecoms folk out there who have a copy of the documentation for an ancient #ISDX DLI card, part No 871/2/06561/004

I want to check what signalling the 06561/004 variant supports

I've got the docs for the 06562/004 which I think is similar (but later?) car - but I'm wary of extrapolating...

I wouldn't normally ask, but please boost for reach?

#PABX #PBX #TelephoneExchange #PhoneExchange

Are there any #Telecoms folk out there who have a copy of the documentation for an ancient #ISDX DLI card, part No 871/2/06561/004

I want to check what signalling the 06561/004 variant supports

I've got the docs for the 06562/004 which I think is similar (but later?) card - but I'm wary of extrapolating...

I wouldn't normally ask, but please boost for reach?

#PABX #PBX #TelephoneExchange #PhoneExchange