TELEPHONE No. 55

Wall set used on the Strowger Automatic System.

Presumably ATM (Epsom type).

Fitted with Dial No. 1.

Very basic circuit, with dial, receiver and transmitter all in series with no induction coil.

Telephones No.s 55 and 55B were superseded by Telephone No. 121.

Circuit diagram - Web users click here - CD users click here

Here is a picture of the insides of a Telephone No. 55.  All the brassware should be black and note the non-ATE dial, especially the way it is fixed!

Last revised: July 17, 2007

FM