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DTMF Code

Tool to decrypt/encrypt DTMF codes. DTMF codes are combinations of sound frequencies used in phones when dialing numbers.

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DTMF Code -

Tag(s) : Communication, Substitution Cipher

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# DTMF Code

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## DTMF Frequencies Encoder

Tool to decrypt/encrypt DTMF codes. DTMF codes are combinations of sound frequencies used in phones when dialing numbers.

## Answers to Questions

### How to encrypt a number using DTMF Codes?

Encryption uses a simple substitution of numbers with their DTMF frequency as described in the table:

 1209 Hz 1336 Hz 1477 Hz 1633 Hz 697 Hz 1 2 3 A 770 Hz 4 5 6 B 852 Hz 7 8 9 C 941 Hz * 0 # D

Example: To crypt DC0D3, look for D which is the combination of 941Hz and 1633Hz, then write it 1633-941 (or 941-1633)

Example: The complete ciphered message is 1633-941/1633-852/1336-941/1633-941/1477-697

### How to decrypt Codes DTMF cipher?

Decryption is a simple reverse substitution, for each frequency, a letter is associated.

### How to recognize DTMF Codes?

There are only 8 frequencies: 697 Hz, 770 Hz, 852 Hz, 941 Hz, 1209 Hz, 1336 Hz, 1477 Hz and 1633 Hz.

## Source code

dCode retains ownership of the source code of the script DTMF Code online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, etc.) which dCode owns rights can be transferred after sales quote. So if you need to download the online DTMF Code script for offline use, for you, your company or association, see you on contact page !

## Questions / Comments

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