Instructions for use
Select an object to view from the list below. To rotate either click on the rotate icon located in the bottom right hand corner of the image or click and drag within the object window.
Ericsson Speakerphone
A/B Coinbox mechanism 1
A/B Coinbox mechanism 2
Pay on answer (POA) payphone
Renters prepayment coin collecting box
Strowger switches
One of the best-known manufacturers of telephone instruments, Ericsson designed the speakerphone for use in police call boxes. The patent for improvements in or relating to police, fire and ambulance telephone call systems was submitted by Ericsson in 1931 and accepted in 1932. The installation of the speakerphone meant that the public could access a direct line to the local police station, to report emergencies or to make routine enquiries.