Whitehall Director Switch
A Siemens Director Switch
Director Exchanges grew from the requirement for an automatic switch that could route calls between a large number of exchanges that were located within in a small area (e.g. within a city such as London).



Photo: An electro-mechanical S50 Director Switch.

The bottom left S switch has been replaced by a type 2 uniselector due to a lack of spares of the S50 wiper assemblies © John Evans.
| EXIT | Siemens Director Switch |
   
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