The General Post Office ordered the telephone 332.
The General Post Office is the government agency for post and telephone communications in Great Britain.
The company Ericsson Telephones in London made the telephone 332.

The telephone 332 was made of a new material.
The material is called: Bakelite.
Bakelite was one of the first synthetic materials (plastic).
In the drawer of the telephone 332 was a list with the area codes of places nearby.