Atlanta telephone exchanges



The history of the telephone exchange names in Atlanta, as in most significant United States cities, can be divided into three periods:

  1. The pre-dial period, which for the purposes of this site extends to July 28, 1923, when all telephone calls were completed by manual action by operators (Only one exchange in Atlanta was changed to dial at this time, but as long as any exchanges were dial, the requirements for dial exchanges applied), and there were no constraints on exchange names other than that there was no likelihood of confusion when a customer gave the name to the operator,
  2. The early dial period, beginning with July 28, 1923, in which the Atlanta telephone numbers were set up to accommodate dialing the first two letters of an exchange name followed by a four-digit number designating the individual line, though in fact not all exchanges provided for dialing by the phones in those exchanges, and
  3. The late dial period, whose beginning in Atlanta was not at a sharp point in time but lasted for somewhat over a year in 1955 and 1956, in which, instead of the first two letters of an exchange name alone, one dialed the first two letters and an "office numeral" (This was the terminology used in an early New York City directory, though it was not common terminology in this period), again followed by four digits designating the individual line.

While the transition from the early to the late dial period extending over several years is unusual, a similar piecewise process was followed in New Orleans, Louisiana and in the Los Angeles, California metropolitan area.



Atlanta:
Main Atlanta page
Chronological periods of the Atlanta data:
Pre-dial period Early dial period Late dial period



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Last modified March 8, 2015.



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