Different calling dials

Inventory number: T99 1/10/1
Location: Hall 1

The dialer (calling dial) mounted on the telephone set is designed to send signals (pulses) to the machine-switching system by means of which the machines of the exchange are set to the called party line. During the reverse rotation of the spring-based mechanical construction the circuit is interrupted according to the dialed number.

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  • Different calling dials

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