TELEPHONE No. 24

t024.jpg (11151 bytes)This is a wooden cased table telephone originally fitted with a "Telephone, Micro" as the handset, but later fitted with a Telephone No. 28.  It has a press button fitted just above, and to the right, of the front terminals.

Originally  known as the "Telephone, Table without Bell A", it was renamed as the Telephone No. 24 circa 1911. 

This telephone is used on C.B.S. exchange systems, with extension plans where an incoming indication is not required.

The pin in the middle of the telephone was used to provide a fifth connection to the gravity switch hook springs.

The circuit connections are equivalent to those which are obtainable with the G.P.O. Telephone for Granular Transmitter "C", i.e., the signalling apparatus joined to Terminals 1 and 5 is entirely disconnected from the line leads when the Micro Telephone is lifted.

Similar to the Telephone No. 20 except that the bell is replaced by an exposed contact.

Found in the 1906, 1910, 1911, 1912, 1913 and 1915 Rate Books.

Telephone includes (1910, 1911, 1912, 1913 and 1915):-
1 x Coil, Induction No. 1.
1 x Cord, Flexible No. 702.
1 x Strip, Cords Flexible, Connector, 7-Terminal, Mounted.
1 x Telephone No. 28.

Made by Ericsson.

Circuit Diagram - N124.
Circuit Diagram - TL146.

 


 

 

 
 
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Last revised: October 26, 2025

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