TELEPHONE No. 310
Introduced in 1947, this Bakelite cased, combined table handset telephone was used by the BPO in Automatic exchange areas with a Bellset No. 41 on shared service separate metering lines.
The case has provision for one press button only and was supplied with a label stating "Call Exchange".
Mark 1 - has a Receiver, Inset No. 1L in the handset and switch
bracket with plungers of the early type.
Superseded by the Telephone No. 312 in 1949.
The wall equivalent is the Telephone No. 311.
Made By Ericsson, model N1003M1
Picture by Paul Follet.
Telephone Includes (1956):-
Diagram for telephone circuit - N410.
Diagram for Button labels - N620.
Drawing No. 63022 - Telephone
How to wire your Telephone No. 310 to make it work on Plug and Socket
300 Type telephone circuit description
Dismantling the Telephone No. 310
History, Technical and General Information on 300 type telephones
Keys for use in 300 type wall and table telephones
Labels that fit in the sliding tray
General fault finding on your phone
Comparison chart of GPO 300 type telephones
Some models made by British Ericsson, their model N1003B
Internal View of the Telephone No. 310
Note the Telephone Number and date between the bell gongs
Last revised: February 19, 2023