AT&T TL74108 5.8 DSS Corded/Cordless Answering System (Black) Phone system with dual cordless/corded handsets and built-in digital answering machine Digital Spread Spectrum Frequency Hopping on 5.8 GHz frequency enables superior range, clarity, and security Built-in digital answering machine offers reliable and instant access to messages Supports caller ID and call waiting Intercom system to communicate between base and handset