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| AUTOMATIC TELEPHONE EXCHANGE No. 870
In a small installation the heavy expense of manual operating can thus be avoided.
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Last revised: March 29, 2024FM2 |
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| AUTOMATIC TELEPHONE EXCHANGE No. 870
In a small installation the heavy expense of manual operating can thus be avoided.
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||||||
Last revised: March 29, 2024FM2 |
For six metallic circuits. The purpose for which this switch is intended is
to automatically make connections between the local subscribers' lines and a junction to
the main Exchange. It is to be specially recommended where a small number of subscribers
live close together at a distance from the main Exchange.