Beginning with HD-Audio Quality along with all of the other features and functionality of the TC-12 telephone, the TC-24 includes a large backlit display and is capable of expanding to 96 programmable function keys. This phone is ideal for the Executive or Receptionist who needs to be able to immediately see the activity on all of the telephone lines, as well as providing one-button dialing of all of the extensions. Also as with the TC-12 phone, the TC-24 supports wireless and cabled headsets and a Full-Duplex Speakerphone. This phone received Internet Telephony's - Product Excellence Award.