Combined table telephone (with DC trembler bell) for use in CBS No's 1, 2, 3 and Magneto exchange areas and on long lines in CB and Auto areas on extension plans.

Also used on Private Wires.

Bakelite cased telephone with provision for 3 buttons.

This telephone had a tray for the subscribers personal directory but as from June 1940 the tray was not fitted and instead the telephone was supplied with a Tray, Dummy, D62099 (a blank plate).  This was probably a war time cost saving, as in late 1947 the tray was re-introduced.

Available only in Black.

Mark 1 - has a receiver, Inset No. 1L in the handset.
Mark 2 - has a receiver, Inset No. 2P in the handset.
Mark 2A - has a receiver, Inset No. 2P in the handset with a switch hook bracket and plungers of an improved design.

Telephone includes:-
1 x Bell No. 65A, Unmounted.
1 x Part No. 3/SCA/17, Black.
1 x Bell-gong No.2, Nickelled.
1 x Capacitor, M.C. No. 97.
1 x Telephone No. 164, Black.
1 x Coil, Induction No. 27.
1 x Tray, D 62076, Black or Tray, D1/62833, Black or Tray, Dummy, D62099, Black.
1 x Dial, Automatic, Dummy No.3, Black.
1 x Filter, Suppression No. 26A.

Supplied to the BPO by Ericsson, their Model N8444B - Circuit Diagram N54188 dated 1938.

Circuit diagram - N492.

Circuit diagram - SA 4091.

Diagram for the Button labels  - N620.

Drawing - 63022.


History, Technical and General Information on 300 type telephones

Collectors information

General fault finding on your phone

How to restore Bakelite

Dismantling the Handset

Dismantling your Telephone No. 312

Keys for use in 300 type Wall and Table Telephones

Labels that fit in the sliding tray

Comparison chart of GPO 300 type telephones

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Last revised: November 20, 2021