Strowger Automatic Telephone Exchange. Known as a “Bullseye Strowger” ca. 1899-1900. Notice the celluloid patent disc in the center of the bottom battery box.

Strowger Automatic Telephone Exchange. Known as a “Bullseye Strowger” ca. 1899-1900. Notice the celluloid patent disc in the center of the bottom battery box.

E. E. Haynes owned and operated the Telephone Exchange in Rio Vista, Texas from 1917 to 1944. Submitted by G. Alan Galleries.

E. E. Haynes owned and operated the Telephone Exchange in Rio Vista, Texas from 1917 to 1944. Submitted by G. Alan Galleries.

Telephone exchange chaining in the 1970s - a form of phone phreaking

Telephone exchange chaining in the - a form of phone phreaking

This BT-owned telephone exchange is notable as it contained one of the last working Strowger (electro-mechanical) exchanges to be taken out of service in Scotland. Description from geograph.org.uk. I searched for this on bing.com/images

This BT-owned telephone exchange is notable as it contained one of the last working Strowger (electro-mechanical) exchanges to be taken out of service in Scotland. Description from geograph.org.uk. I searched for this on bing.com/images

German prisoners, captured by the Polish Home Army during the Warsaw Uprising of August to October 1944, at the city's central telephone exchange. Original Publication: Picture Post - 9259 - Pictures From The Grave - pub.1957 - pin by Paolo Marzioli

German prisoners, captured by the Polish Home Army during the Warsaw Uprising of August to October at the city's central telephone exchange. Original Publication: Picture Post - 9259 - Pictures From The Grave - - pin by Paolo Marzioli

Electricity Photograph - Firman Telephone Exchange Patent Art 1882 Blueprint by Ian Monk

Electricity Photograph - Firman Telephone Exchange Patent Art 1882 Blueprint by Ian Monk

Telephone exchange - Wikipedia

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises. Shown is a 1924 PBX telephone switchboard on display at the Atlanta History Center in Atlanta, Georgia.

Telephone Switchboard circa 1900. 10 line manual telephone exchange made by the National Telephone company.

Telephone Switchboard circa 10 line manual telephone exchange made by the National Telephone company. I used o b e like this when I worked for the hospital in 1980

Telephone numbers used to begin with two letters, which were an abbreviation for a word. For example, there was a Glenn Miller song called PEnnsylvania 6-5000, and Liz Taylor made a movie called BUtterfield-8. I'm just barely old enough to remember that my phone number at home when I was 5 or so started with SYcamore 4, or SY4. These were telephone exchanges, and had exchange names -- PEnnsylvania, SYcamore, KLondike, etc.  Ours was Fleming (35).

A typical telephone-exchange switchboard, ca. "War calls come first." So many women supported families being telephone switchboard operators. My aunt Nell worked one of these :)

England. C. 1944-12. Sergeant Tessa Best, supervisor on duty in a station telephone exchange. She has been in the WAAF for five years, and was born in Australia.

Sergeant Tessa Best, supervisor on duty in a station telephone exchange. She has been in the WAAF for five years, and was born in Australia ~

Highgate Wood, the first electronic telephone exchange

I worked here! Highgate Wood, the first electronic telephone exchange

Subterranea Britannica: Research Study Group: Sites: Kingsway telephone exchange

Subterranea Britannica: Research Study Group: Sites: Kingsway telephone exchange

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