INTERMEDIATE AND EXTENSION
This intermediate set allows an extension the use of the exchange line, as well as intercommunication, and is ideal for the executive with secretary.
The switching mechanism consists of four inter-acting push-button keys in the top panel above a window through which "engaged" is displayed by the operation of an indicator-relay during extension-to-exchange conversations.
Other fitments include an "alnico" generator, a ringer for exchange calls (extension calls operate a ringer in the wall case) and a dial, normally of P.O. pattern, but other types can be fitted.
Extension-to-exchange calls can be made secret or non-secret from intermediate and an audible signal at their conclusion can be arranged if desired.
A maximum line loop resistance of 800 ohms ensures satisfactory working.
These telephones have Code Nos. N1047H (intermediate) and N1048H (extension).
N 1046H Type
Wall case: 8.25 X 6.25 x 2 inches
This is a standard auto set adapted to accommodate an "alnico" generator for
calling the intermediate station and contains a 1000-ohm ringer. The automatic dial is
used for calling the exchange.
Overall dimensions: 8 x 9.25 x 6.5 inches.
Note - Equivalent sets for short distance working, with one or two extensions, and fitted with push-buttons for battery signalling, in lieu of "alnico" generators, can also be supplied.
Taken from the Ericsson Telephone Catalogue, edition No. 49
N1048H40 in Black was supplied to the Australian Post Office - this telephone had a coiled cord.
N1046H3T and N1047H3T were fitted with a Dial No. 24C.
Last revised: June 23, 2020