eatm - phone box

Red telephone box, with separate phone and cash box (first used in 1925, and began to be phased out in the late 1950s)

The Button A and Button B payphones, connected callers via an operator on insertion of the call fee.
The caller then pushed Button A to deposit the coins and make the connection. If a call could not be connected for some reason, or if there was no reply, Button B was pushed and all the coins were returned.

During the 1960s the development of STD exchanges altered the cash requirements significantly and the design of payphones also changed.