Types AB 2100 - 2120
Magneto Wall Telephones
FRAMEWORK, black enamelled steel, constructed to hold two dry cells, RK 210 or RK 350 (Old No. 972).
TRANSMITTER, RC 180 on adjustable arm RC 650.
RECEIVER. RD 600, with cord RS 4050 (Old No. 2383), suspended on a hook-switch.
GENERATOR, For type and number of magnets see table below.
These generators ring satisfactorily through a line resistance of 25,000 ohms.
RINGER. For resistance see table below.
These telephones have enclosed line terminals.
Telephones AB 2105 and AB 2120 are provided with a press button for cutting out the ringer coils, and short circuiting the induction coil, the button to be pressed down while ringing.
If specially ordered, we supply these two telephones without the press button, but with the connections so arranged that the ringer is cut out when the generator is operated.
Taken from the Ericsson Telephone Catalogue 1912
Last revised: September 30, 2019