For C.B. wall and table sets on automatic systems.  For 1 exchange line and 1 extension with intercommunication.

Used at main station.

Used with Telephone No. 105 and No. 124, and Bell-Set No. 1, with bias spring.

Bellset included (1928):-
1 x Bell No. 1A, unmounted, with bias spring
2 x Bell gongs No. 17.
1 x Condenser, M.C., No. 14.
1 x Generator No. 40.
1 x Indicator and Key No. 8.

Superseded by Bellset, No. 20.

Diagram A.T. 784.

Click here for more information on Bias Springs.


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Last revised: October 30, 2022