| Subject | English | Spanish |
| commun. | double tone multiple frequency | multifrecuencia de doble tono |
| commun. | double tone multiple frequency | multifrecuencia bitono |
| comp., MS | dual-tone multiple-frequency | tono de marcado de frecuencia múltiple (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) |
| el. | multiple frequency | frecuencias múltiples |
| commun. | multiple frequency environment,to distribute in a- | ambiente de múltiples frecuencias, distribuir en- |