Central Office Histories

This section is a history of each of the telephone central office buildings in the Atlanta Metro area and the types of equipment found there. You can read about unusual dialing procedures that existed and hear dial tones, ringing and busy signals that were heard in each place in the years before today's digital switching.

1965 Metro Calling Map

Click on one of the buttons to see the history of offices in that section.

Early Offices Before 1920 »
Numerical Index -------------»

Technical Articles

The Peculiar Marietta Crossbar Machine
Ringing and Tones

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