Multiple choice technology testing

Which hardware does a computer needs to understand the DTMF signals produced by the phone..

  1. Telecommunication cards

  2. Telephony board or telephony card

  3. Keypad

  4. Speaker phones and keypad

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dual-Tone Multi-Frequency (DTMF) signals generated by telephones require specialized hardware known as telephony boards or telephony cards to be processed and understood by a computer system in computer telephony integration.