Expand upon your current home phone system with the at&t cl80107 cordless accessory handset, which features call waiting and caller id. The large high contrast screen ensures you can easily read who is calling, as well as simply navigating through the phonebook and redial lists. Use the handset as an intercom to communicate with the rest of your phone system, and use the speakerphone function to continue talking in case you need to put the phone down.