DB 250
This telephone has a dial and can only be used on Telephone Systems OL 20 and OL 25.

Parts
Micro telephone RE 1023, insulated capsule transmitter, high resistance and waterproof.
Dial RG100.
Ringer of 300ohms resistance.
Press button for calling.
Plug ended line cord.

Frame work entirely of black enamelled steel.

The dial number plate is numbered 1, 2 to 9, 0, in a clockwise direction.

The line terminals are enclosed.

Weight 2.9 kg.

DB 252
This set is the same as the DB 250 except that the line cord is fitted with a terminal block.

Taken from the L. M. ERICSSON TELEPHONE Catalogues dated 1921 and 1929

This telephone has the wrong dial fitted

Last revised: July 07, 2024