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Telephone 600
Siemens Brothers Standard Telephone (Diagram T29849)
- normally wired to Schematic A
Schematic A has only Terminals 2, 4, 5, 6, 7 and 8 populated.
Schematic A telephones only have the 100ohm and 220ohm resistors.
These is a wire link in place of the 470ohm resistor.

Telephone Model - unknown
AEI Variant (Diagram T31591)
This model is a similar to the Telephone 600 except is has a small board
with a 2uf capacitor
and three terminals. This capacitor is for party line working.
Telephone 904 & 908
Kingston Communication variant (Diagram T34320) Part 1

Telephone 904 & 908
Kingston Communication variant
(Diagram T34320) Part 2

Telephone 906
AEI Variant (Diagram 5039-00008) Part 1

Telephone 906
AEI Variant (Diagram 5039-00008) Part 2

Telephone 980 & 981
AEI Variant (Diagram T34357) Part 1
Please note that there are three variants of this telephone, detailed in
Schematic A, B and D

Telephone 980 & 981
AEI Variant (Diagram T34357) Part 2
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