Bakelite cased wall telephone, introduced in 1956, for use in CB and Auto areas on extension plans (the picture shows a wrong label).

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

Wall equivalent of the Telephone No. 326.

Made by British Ericsson, Model N1081A1.

Circuit diagram N427.

Click here for the circuit diagram - Web users - CD users

History, Technical and General Information on 300 type telephones

Collectors information

Click here for Button labels  - Web users - CD users

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

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Last revised: May 27, 2017