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Date: |
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Description: | SIEMEN BROS & CO LTD
3207
1916
First World War period British Army 4-line 'Buzzer' exchange as used by infantry battalion HQs. 'Buzzing' and 'vibrating' line telephones instruments were replaced by the 'Fullerphone' in 1916 mainly because their messages could be intercepted by listening circuits. However, some were maintained in order to transmit false information to mislead the enemy.
exchange | Publisher: | http://www.iwm.org.uk | Source: | Imperial War Museum | Creator: | Siemens, Bros & Co Ltd | Identifier: | http://www.iwm.org.uk/collections/item/o... | Go to resource |
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