DTMF (Dual Tone Multi-Frequency)
Is used in telephone switching today to transmit the telephone number to the telephone network or a private branch exchange. DTMF dialling is also used with IVR systems. The term TouchTone is also widely used.
Is used in telephone switching today to transmit the telephone number to the telephone network or a private branch exchange. DTMF dialling is also used with IVR systems. The term TouchTone is also widely used.