| |||
numérotation en fréquences vocales (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) | |||
| |||
double tonalité multifréquence | |||
English thesaurus | |||
| |||
Dual Tone Multiple-Frequency (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) | |||
| |||
DTMF |