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 - L11560A1 (fitted with UK dial or dial blank plate).
Diagram L530301 - L11560C7 (fitted with a Dial No. 24C).
Diagram L532600 - L11560.

The L11560A1 was a GPO Telephone No. 332CB, but maybe fitted with a UK dial.

The L11560C7 was a GPO Telephone No. 332 Mk1 but is fitted with a Dial No. 24C, which would never be fitted to a GPO telephone.

Telephone Rentals Ltd and Communication Systems Ltd used the L11560C7 telephone on PAX systems.

New Zealand used the Telephone No. 332F, which was the L11560A2 SPL.

An Australian 332AT with a lock was the L11560B6.

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 L11560A1 and L1150C7 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: October 01, 2025