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

Telephone exchange chaining in the - a form of phone phreaking

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 - 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.

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

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

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

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 ~

Old Chinese Telephone Exchange Keychain - accessories accessory gift idea stylish unique custom

Old Chinese Telephone Exchange Keychain

Shop Old Chinese Telephone Exchange Keychain created by EverydayLifeSF.

Old Chinese Telephone Exchange Magnet  $5.95  by EverydayLifeSF  - cyo customize personalize unique diy

Old Chinese Telephone Exchange Magnet

Old Chinese Telephone Exchange Magnet - home gifts ideas decor special unique custom individual customized individualized

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 :)

The old Post Office in Adderley Street (right), ...    ...was joined to the telephone exchange building by a bridge over Parliament Street

The old Post Office in Adderley Street (right), .was joined to the telephone exchange building by a bridge over Parliament Street

Old Chinese Telephone Exchange Baby Bodysuit - baby gifts child new born gift idea diy cyo special unique design

Old Chinese Telephone Exchange Baby Bodysuit

Old Chinese Telephone Exchange Baby Bodysuit - baby gifts giftidea diy unique cute

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