TELEPHONE No. 1
Standard GPO wall telephone for
C.B. exchange areas.
Made by British Western Electric (originally their Model No. 265) and also used by the National Telephone Company (their Telephone No. 4). The GPO inherited the NTC's telephone estate and therefore a large number of NTC Telephone No. 4's.
Wooden cased telephone fitted with a sloping writing desk. Fitted with a Bell Receiver, 1000 ohm bell, Induction Coil and solid back transmitter.
The 3 terminal type was superseded by the 5 terminal type.
The telephone should be fixed to the wall, the lower edge 40 inches from the floor.
Superseded the Instrument, Subscribers, Wall NT No. 13.
This telephone was in the 1928 Rate book but not available in the 1946 Rate Book.
Telephone Mark 234 includes (1928):-
Mark N.T. No.13:-
Mark N.T. Nos. 14 and 16:-
Later Types - 5 Terminal:-
Early Telephone No.1's were in fact NTC badged. NTC bought the phones from British Western Electric who made them in Antwerp, Belgium. The B.P.O continued to purchase from the British Western Electric Co. and this was their model No. 312.
Circuit diagrams - N101 and C.B. 518.
Labels for the notice frame
GPO Label (Circa 1911)
Last revised: November 13, 2023