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

Superseded by the Telephone No. 312 in 1949.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):-
1 x Bell No. 59A, Unmounted.
1 x Bell-gong No. 2.
1 x Bell-gong No. 2A Nickelled.
1 x Block, Terminal No. 20/8, Black.
1 x Capacitor, M.C. No. 97.
1 x Coil, Induction No. 27.
1 x Cord, Instrument No. 5/14B, Brown.
1 x Cord, Instrument No. 5/28E, 5".
1 x Dial, Automatic No. 12 ...
1 x Key No. 302B.
1 x Part No. 2/SCA/20, Black.
1 x Telephone No. 164, Black.
1 x Tray, D62076 Black.

Diagram for telephone circuit - N410.

Diagram for Button labels - N620.

Drawing No. 63022 - Telephone components parts.
Drawing No. 63023 - Chassis components.
Drawing No. 63250 - Chassis components (improved switch hook buttons).
Drawing No. 90319 - Telephone parts (Mk 3A).
Drawing No. 90373 - Chassis components (improved switch hook buttons).
Drawing No. SBA12 - 300 type base plate.
Drawing No. SCA17 - 300 type complete case.
Drwaing No. SCA20 - 300 type case.
Drawing No. SCA47 - 300 type complete case (improved switch hook buttons).