The Exchange

The Exchange working will not be covered by this site and one should go to numerous other sites for information on such matters.

However, here are some pictures that may be of interest.

Battery room in an exchange.  Note the busbars feeding the exchange.
The batteries main function was to reduce noise in the power system.

Racks of Subscribers meters.  These are what used be used to bill subscribers.
Today, modern exchanges do billing via software driven processers.
The lady here has a camera and a tube which has a flash light in it.  This must be a staged picture
as the camera unit is not lined up with the marks on the meters!


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Last revised: February 06, 2011