INTERCOMMUNICATION WITH EXCHANGE FACILITIES
This distinctive and registered design combines all the facilities of a small switchboard and an intercommunication system in one instrument. The case is of moulded Bakelite and incorporates a much improved type of micro-telephone rest which has been specially designed with a view to reducing the risk of breakage's. The interior mechanisms and apparatus are arranged to give maximum accessibility to all parts and the buzzer is mounted on the connecting plug so that it may be readily adjusted without interfering with the instrument. Each set is connected up to a system on the plug-and-jack principle. If required a directory tray can be fitted under the base.
In order that the instrument should not be unnecessarily complicated, certain facilities were aimed at when designing, and the following have been achieved and standardised.
The station selected in an installation to act as the master station for the care of incoming exchange calls is fitted with an auxiliary or transfer unit, one of which is illustrated.
The plugs are included in the weights but not in the dimensions.
Note - For working to magneto exchanges similar equipment's can be supplied.
Taken from the Ericsson Telephone Catalogue issue no. 49
Last revised: October 03, 2019
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