TELEPHONE No. BC 2055
Table telephone for loudspeaking conference telephone systems
When a ring signal is received from the master station the micro-telephone should be lifted, which will establish communication between the two stations. Calls to the master station are carried out simply by lifting the micro-telephone of the side station. The corresponding indicator of the executive’s switchboard will then be actuated. If the button of the side station is pressed, the bell of the master station will ring.
Taken from the L. M. Ericsson Telephones and Signalling Material Catalogue No. 188 (1934)
Last revised: September 30, 2019