ATM TELEPHONE L.11560

 
STROWGER TABLE AUTOMATIC TELEPHONE

L.11560

Bakelite table table telephone for use on automatic 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 picture).

Supplied mainly in black but occasionally found in ivory. 

Generally found without a drawer.

Diagrams
Diagram L532600 - L11560.
Diagram L530501 - L11560C7.

The L11560C7 is a GPO Telephone No. 332 Mk1 but may be fitted with a Dial No. 24C, which would not be fitted to a GPO telephone.

Maybe labelled underneath as an ATE telephone but possibly made by AEP in Portugal.

Communication Systems Ltd used the L11560C7 telephone on PAX systems.
 

How to convert an L11560 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).

 

Diagram L532600
 

 

L11560C7

Front view - with American dial
 
Close up of base, showing "Property of United Nations" transfer

 

L11560C7 Special

 

L11560C7 with BPO Dial No. 10

 

Diagram L530301

 

 
 
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Last revised: February 10, 2023

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