On a modem, or any other device that uses the "AT" command set, you can put the letter P for Pulse or T for Tone in the dial string. For example, ATDP9,1800T555P0123 would pulse-dial 9 (pause) 1 8 0 0, then tone dial 555, and then pulse dial 0123.
On many landline push-button phones, there is a switch that allows you to select Tone or Pulse dialing. If you have the switch set to Pulse and hit the star key, the phone will switch over to Tone dialing for the rest of that call.
A pulse dialing phone is a telephone that can dial a number using a series of clicks (pulses) instead of tones. All rotary telephones use pulse dialing; many pushbutton phones, especially older models, have a switch for tone or pulse.
1) Pulse dialing sends number in terms of pulses while the tonedialingsends the number in form of tones " dtmf"2) pulsedialingis slower than tone dialing 3)pulse dialing doesn't use keypad while tone dialing use 4) pulse dialing isobsessed while tone dialing is modern
I'm guessing your talking about telephone. The pulse system: When you push a number on your phone, it transmit a certain amount of pulse. the receiving circuit will count the number of pulses that your telephone transmited to determined that number that was pressed. The tone system: When you push a number on your phone, 2 different tones (or sinus) are transmited. There are 4 lines and 3 columns on the keypad and there are 1 tone for each line and 1 tone for each column. So when you push "1", the first line's tone and the first column's tone are both transmitted at the same time. The receiving circuit listens and figure out the number you pushed by analyzing the 2 tones. The tone style is also known as "DTMF" Older phones with rotary dials generate pulses that may not be recognized by by modern DTMF-only systems such as Internet based VOIP phone services, and some fibre optic (FIOS) phone services. In order to use a pulse-only phone on a DTMF (tone-only) phone service you will need a pulse to tone converter like the Oldphoneworks LPT-310 Pulse to Tone Converter (www.oldphoneworks.com), or the Rotatone Pulse to Tone Converter (www.rotatone.com).
Some telephones, fax machines, and modems can use pulse dialing, because for many years, touch-tone dialing either was not available at all or required an extra monthly fee. In pulse dialing, the equipment sends a series of electrical pulses equivalent to rapidly connecting and disconnecting the telephone line. The count of pulses gives the digit being dialed.
Modems have dial tone recognition, automatic tone and pulse dialing, monitoring call progress tones such as busy and reorder, automatic answer, and call termination
Pretty much any phone (even feature phones) can be configured to use pulse dialing. Some phone companies (e.g. VoIP providers) do not recognize pulse dialing, though.
Touch Tone was a trademarked name used for the system technically known as DTMF, or Dual-Tone Multi-Frequency, dialing. In DTMF, pressing each key on a telephone dial produces two different tones. Each row and each column of the dial is assigned a specific frequency (pitch) of tone, so the combination of the two tones uniquely identifies the key that was pressed. The telephone switch receives and decodes the tones in order to process the call. This is in contrast to pulse or rotary dialing, in which a series of electrical pulses or clicks are sent through the telephone wire, either by turning a rotary dial or by generating the clicks electronically. The telephone switch counts the number of clicks to get each digit that is dialed.
A rotary phone works by basically hanging up and picking up rapidly, and this would send pulses of electricity to equipment at the central office, which would move machinery there to make your call. Therefore, it was called pulse dialing. Today, we use tone dialing.
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Mostly tone, although pulse is still available in some areas
Revertive pulse dialing is a system first introduced in Panel Switch Exchanges and used only between exchanges in which the called exchange sent back (revertive) dial pulses for each digit to the sending exchange until the sending exchange signaled that the correct number of pulses had been sent for that digit.This is in contrast to standard pulse dialing in which a phone sent dial pulses to the local exchange for each digit or the sending exchange sent dial pulses to the called exchange for each digit.Revertive pulse dialing was considered a more reliable means of transferring numbers between exchanges than standard pulse dialing as certain types of errors in the transfer could be detected that was not possible to detect with standard pulse dialling.A telephone cannot use revertive pulse dialing! It can only be used between exchanges.