TELEPHONE No. 24 | |||||||
This is a wooden cased table telephone fitted with a Telephone No. 28 as the handset. It has a press button fitted just above, and to the right, of the front terminals. Also known as the "Telephone, Table without Bell A". This telephone is used with Extension Circuits, on C.B.S. systems.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. Includes:- Made by Ericsson. Circuit Diagram -
N124.
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Last revised: July 02, 2024FM |