Introduced in 1938 this telephone was used with a Bellset No. 39 or 44 on C.B. & Automatic systems. 

This combination was the main phone on Plans 5, 5A, 7 & 7A.

The telephone differed from Telephone No. 232 in that it had an additional contact set on the switchook springs and was supplied without a base.

There are two versions of this telephone, the Mark 1 and Mark 2  and these made different use of terminals 6 and 8 as the two phones were wired differently.  Terminals 6 and 8 were reversed which meant that the green handset wire could be on one of two terminals.  The Mark 1 used terminal 6 whilst the Mark 2 used terminal 8.

The Mark 1 has a Coil, Induction No. 24 whilst the Mark 2 has a Coil, Induction No. 27.

Spring 1 of the cradle switch is spring-set is adjacent to the mounting.

The Telephone No. 248 pictured below is mounted on a Bellset No. 39.

Telephone (Mark 2) includes (Rate Book 1946 and 1956):-
1 x Coil, Induction No. 27.
1 x Part No. 1/SBR/3.
1 x Part No. 1/SBR/4.
1 x Part No. 1/SCR/l Black.
1 x Part No. 2/SCU/1.
1 x Part No. 1/SPL/321 Black.
1 x Part No. 3/SSP/513.
1 x Part No. 1/SSW/11.
1 x Cord, Instrument No. 8/10E 8".
1 x Dial, Automatic, Dummy No. 3, Black.
2 x Part No. 1/SWA/72.
1 x Telephone No. 164, Black.
1 x Dial, Automatic No. 12 (1956).

To be requisitioned separately:-
1 x Cord, Instrument No. 5/09E, 3".
1 x Label No. 160.
1 x Dial, Automatic No. 10 (1946).

Circuit Diagram - N348.

Drawing - 62828.

General information on 200 type telephones

Collectors Information - what to look for

How to restore Bakelite

How to dismantle a 200 type telephone

Dismantling the Handset

How to wire your Telephone No. 248 to make it work on BT Plug and Sockets

Telephone No. 248 on a Bellset No. 39


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Last revised: December 26, 2021