Nowadays all telephones have push buttons, but if you were to connect a telephone with a dial today, could it still be used? Or are these kinds of ‘pulses’ no longer recognizable for the current telephone network?
Answer
Dear Melina,
Whether a telephone with a dial is still usable depends on the exchange.
It is the case that in Ghent, for example, the pulses of such a telephone are no longer recognized.
Some older power stations still accept this.
The system worked as follows: when dialing a one, for example, one pulse was sent to the telephone exchange, when dialing five, for example, five pulses were sent. The zero stood for 10 pulses.
There are also old push-button telephones that used that system.
Today, all modern telephones use the tones system.
Each row of keys has a particular tone associated with it, as well as each column.
Now when a key is pressed, the tone of that row and the column is sent to the control panel at the same time.
Kind regards.
Answered by
ing. Mario Wyns
Computer Hardware Electronics Assembler Microcontrollers Interfacing Light Technology
Brothers De Smetstraat 1 9000 Ghent
http://www.odisee.be
.