ATM TELEPHONE L.11549

L.11549

This is a Bakelite table telephone, used with a Bellset in Automatic exchange areas.

They were also used on Private Automatic Exchanges and can be found fitted with an American or UK dial.

The A2 variant is similar to the GPO Telephone No. 162 but is fitted with an American Dial No. 24C..

The B3 variant is similar to the GPO Telephone No. 232 and fitted with a UK Dial No. 10..

L.11549A2

External view

Base of phone

Handset with ATM insignia

Inside the phone - note the transformer to the right and the American dial

L530112 circuit diagram pasted to inside of base.  Note that the base has a black painted lead weight fitted.

L.11549B3 Special
This telephone is similar to the GPO Telephone No. 232 and has an Induction Coil

Front view

Base of Telephone.

L530316 circuit diagram pasted inside base plate

Last revised: October 03, 2025