TELEPHONE No. 15
Wooden wall intermediate telephone with switchable extension facility, used in CBS areas. The phone can be secret or non-secret.
Ann additional receiver can be fitted to the terminals shown middle, right.
The top cover of the body is a writing shelf and has a paper clip attached to it.
For one exchange line and one extension with inter-communication. Used as the intermediate station.
Complete with a generator, induction coil. relay, two bridging coils, trembler bell and magneto bell.
Fitted with Transmitter No. 6 on early types and Transmitter No. 2 on later variants. The transmitter arm moved up and down.
Two batteries were housed in the lower part of the telephone.
Circuit diagram - N115.
Telephone includes (1928):-
Frames, Notice, No. 2 and Labels No. 53, will not be maintained in these
Last revised: October 16, 2023