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
The coinbox works by holding the coins in suspension in a container which is controlled by two press buttons, A and B. To make a call, the caller would press Button A, depositing the coins in the cash box and setting up the circuit for speech. If the call could not be connected for any reason, the caller would press Button B to retrieve the coins.