ATM TELEPHONE L.11560

L.11560

This was a Bakelite table table telephone for use on Automatic or CB exchanges.

Note that the telephone could be supplied with a GPO Dial No. 10 or a Dial No. 24C (The No. 24C is an  American dial, see the picture to the right).

Supplied mainly in black but occasionally found in ivory.

Sometimes the letters 'SPL' can be found on the base.  This is supposed to signify that a Stainless Steel dial finger plate is fitted.

Normally found without a drawer.

Diagrams
Diagram L530301 - L11560.A1 (fitted with UK dial or dial blank plate).
Diagram L530301 - L11560.C7 (fitted with a Dial No. 24C).
Diagram L532600 - L11560.

L11560.A1 was a GPO Telephone No. 332CB, but maybe fitted with a UK dial.

L11560.C7 was a GPO Telephone No. 332 Mark 1 but is fitted with a Dial No. 24C, which would never be fitted to a GPO telephone.

L11560.C7 was used on on PAX systems by Telephone Rentals Ltd and Communication Systems Ltd.

L11560.A2 SPL was used in New Zealand (Telephone No. 332F).

L11560.B6 - was used by the Australian Post Office as their 332AT with a lock.

Some telephones maybe labelled underneath as an ATE telephone but were possibly made by AEP in Portugal.  Check the diagram and the handset for AEP symbols.
 

How to convert an L11560.A1 and L1150.C7 wired to Diagram L530301
to work in the UK

1. Remove the old line cord.
2. Remove the link between Terminals 10, 11 and 12.
3. Link terminals 1 and 2.
4. Ensure that Terminals 8 and 9 are linked.
5. Connect a 3.3K resistor between Terminals 11 and 12.
6. Connect the blue wire of the line cord to Terminal 11.
7. Connect the red of the line cord to Terminal 9.
8. Connect the white of the line cord to Terminal 1.

9. Insulate the green wire of the line cord (not used) or connect to Terminal 3.

How to convert an L11560 wired to Diagram L532600
to work in the UK

1. Remove the old line cord.
2. Remove the link between Terminals 10 and 11.
3. Link terminals 1 and 2.
4. Ensure that Terminals 8 and 9 are linked.
5. Connect a 3.3K resistor between Terminals 2 and 3.
6. Connect the blue wire of the line cord to Terminal 11.
7. Connect the red of the line cord to Terminal 9.
8. Connect the white of the line cord to Terminal 1.

9. Insulate the green wire of the line cord (not used).

L11560C7

Front view - with American dial

Close up of base, showing "Property of United Nations" transfer

 

L11560C7 Special

 

L11560C7 with BPO Dial No. 10

 

L11560A1

 

L11560A1

Last revised: December 21, 2025