TELEPHONE No. 43
|Telephone, House, Wall,
Direct Call, Intercommunication, secret, 15 way.
Used in conjunction with the single way Telephone No. 37.
Telephone includes (1928):-
Handset is a Telephone No. 32.
Made obsolete in 1947.
Circuit Diagram - TL 232.
Circuit Diagram - N143.
Note - that there is an indicator in the top box.
Last revised: February 06, 2023