Another day at the #DeanForestRailway working on the #UAX13 #strowger #ElectroMechanical #TelephoneExchange … today I was changing the strapping on the vertical marking bank (VMB) for some group selectors.

The VMB is used when the selector moves vertically, to allow/deny access to certain levels.

Here I converted a selector that allowed (89)xx to allow (34567890)xx

This changes it from serving our museum demo phones to be suitable for use as an incoming selector from a distant exchange.

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