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Author Topic: Voice technology video archives  (Read 192 times)

WWWombat

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Voice technology video archives
« on: May 11, 2017, 09:13:27 PM »

I recently came across the BT video archives, with films from the 40's being ... interesting.

http://www.btplc.com/Thegroup/BTsHistory/BTfilmarchive/1940s/index.htm

I would doubt the claim that the E-side is --

Once an E-side cable has been installed, the joints are virtually never re-opened. (The will always be a "corner case", in some obscure location, that will be an exception to the rule.) Pair swaps do take place, as that just requires a manipulation at the cabinet and the exchange MDF.

Videos on Jointing and Plumbing give a hint about why the E-side isn't opened up much!
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burakkucat

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Re: Voice technology video archives
« Reply #1 on: May 11, 2017, 09:56:06 PM »

Thank you for providing the link. I've book-marked it and will have to make some time to view those videos.  :)
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Ronski

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Re: Voice technology video archives
« Reply #2 on: May 11, 2017, 10:13:31 PM »

Watched the jointing one, it's incredible really that they still work all these years on considering they are insulated with paper.
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WWWombat

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Re: Voice technology video archives
« Reply #3 on: May 12, 2017, 09:06:35 AM »

The plumbing video goes through the process of sealing the joint, and pressure-testing it. And, of course, the whole E-side line is air-pressurised from the exchange too, so if it leaks, it leaks outwards.

I think the videos in the 60's start talking about plastic-coated cables.
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