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impulse indicator

In the electromechanically switched telephone networks, signaling was carried out by means of pulse indicators (IKZ) and pulse dialing.

The pulse code was already used for signaling in the classic circuit-switched telephone network, the POTS (Plain Old Telephone Service), and already activated the lifting rotary dialers, via which the circuit switching was then switched. The pulse indicators themselves were DC pulses generated by the number dialing.

The pulse indicators were and are also used in private branch exchanges for direct dialing to the telephone extensions.

Informations:
Englisch: impulse indicator
Updated at: 22.09.2008
#Words: 85
Links: indium (In), telephone, pulse, code, telephone network
Translations: DE
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