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Image
Has Image
11
Non-Commercial Use
8
Category
Telecommunications
13
Maker
Imperial College London
1
STC plc
1
On Display
Science Museum
3
Information Age Gallery: Exchange
3
Object type
telephone exchange
13
Place
United Kingdom
5
Post Office Research Station, Dollis Hill
2
Antwerp
1
Croydon
1
Salford
1
Material
metal (unknown)
9
plastic (unidentified)
8
glass
4
electronic components
2
wood (unidentified)
2
brass (copper, zinc alloy)
1
composites
1
copper (alloy)
1
fabric
1
porcelain
1
Date
From
To
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Section of a CB1 manual telephone exchange switchboard, 1925-1960
Telecommunications
1925-1960
Items of Western Electric Rotary automatic exchange, 1920-1940
Telecommunications
1920-1940
Section of Distribution Frame
Telecommunications
1922
Overhead Telephone Cable Masonry Bracket
Telecommunications
Rack of equipment from Empress (West Kensington) PCM tandem exchange, 1968
Telecommunications
1968
Strowger step-by-step PABX3 private automatic branch exchange as modified for use at Holmsted Manor, Cuckfield, West Sussex, made by Standard Telephones and Cables Limited, British, 1955-1965.
Strowger step-by-step PABX3 private automatic branch exchange, 1955-1965
Telecommunications
1955-1965
manual Telephone Exchange
Telecommunications
1930-1940
Telephone exchange for use by blind operators, 1977
Telecommunications
1977
Rack from Empress PCM Tandem Exchange, made by the Post Office Research Centre, Dollis Hill, London, England, 1968
Rack from Empress telephone exchange, 1968
Telecommunications
1968
Telephone Exchange Headset
Telecommunications
Telephone Subscriber's Meters
Telecommunications
Automatic telephone exchange,
Telecommunications
Macadie Keysender No 15
Telecommunications
1930-1940