[Tagging] Telephone exchange

Clifford Snow clifford at snowandsnow.us
Sun Sep 16 14:50:28 UTC 2018

On Sun, Sep 16, 2018 at 3:50 AM Simon Poole <simon at poole.ch> wrote:

> Wasn't there just a longish discussion about this, and that its origin
> goes back to marketing language used by Bell?-

 As a former Bell System employee I can tell you we used the term central
office to describe buildings that contained a main frame (MDF), a cable
(local loop) entrance, a telephone switch and usually some sort of
emergency power. It wasn't so much as a marketing term but an engineering
term to describe the buildings function. For example other buildings might
be a repeater station or main station. Early telephone central office did
have windows. Sometime during the 60s and 70s buildings were built without
windows, and some even bricked over, especially on the ground level. I left
just as the VOIP was being introduced so I'm not sure how many switches
still exist. But my sense is there are still many in operation. With the
smaller size of equipment, the telephone exchange may still exist, but they
now rent out space.

There are enough central offices left that I would keep the tag until the
buildings are repurposed. I know of one in Seattle that is now an apartment
building on the upper floors and a glass blowing studio on the ground level

Not sure what the British English equivalent would be to central office.

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