Auto. Extension Telephone
This instrument is for use as an extension station to an intermediate telephone.
The case work is of the same design and the codes of the respective fitments are identical with those given above except, terminal block cord N4108 and terminal block N3158.
Overall dimensions 11 x 10 x 7 inches.
NOTE. When the above telephones are required to be fixed to a wall, a bracket can be supplied.
The 'B' variant was introduced in the Cat 26, 1935 Supplement.
The 'D' variant included the wall case.
Taken from the Ericsson Telephone Catalogue, edition No. 26, 1932 Supplement
Click here for an article from the Ericsson Bulletin
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