Bakelite cased wall telephone, introduced in 1956, for use in CB and Auto areas on extension plans.

This telephone has provision for three buttons in the case moulding and a DC Trembler bell with one gong.

It is fixed to the wall, on 4 rubber mounts, by wood screws.

The case is fixed by a single screw on the bottom of the casing.

Produced in Black, Chinese Red, Ivory and Jade Green.

Wall equivalent of the Telephone No. 326.

Made by British Ericsson, Model N1081A1.

Diagram for telephone circuit - N427.

Diagram for Button labels - N620.

Drawing - 90510 (Mark 1).


History, Technical and General Information on 300 type telephones

Development of the Bakelite Wall Telephone

Collectors information

Keys for use in 300 type Wall and Table Telephones

How to restore Bakelite

How to wire your Telephone No. 327 to make it work on Plug and Socket

Comparison chart of GPO 300 type telephones

Telephone No. 327 with case removed

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Last revised: July 27, 2021