Specifications: Add up to 8 additional handsets to this expandable phone system without the need for additional phone jacks. Combine this with features like dual-line and call-waiting caller ID capabilities, plus a digital answering machine with up to 25 minutes of recording time, and you get a phone that matches expandability with versatility. Easily expandable; the base is capable of supporting up to 8 additional at&t 2402 handsets (sold separately) Up to 25 minutes of total recording time with the built-in digital answering system; no tape to replace 2-line capability allows you to access 2 separate lines using 1 phone (requires installation and subscription from local phone company) Features: System includes corded base speakerphone (no cordless handsets) Cordless expansion handsets (sold separately) require only an electrical outlet to keep them charged; no additional phone jacks needed 2.4ghz digital frequency-hopping spread spectrum (fhss) technology for extended range, clarity and security Call-waiting caller ID lets you know who is calling before you answer the phone, even if you are switching over to a new call on call waiting 50-station caller ID memory and dialer Speakerphone capabilities with both the base and handset 2-way page and intercom make it easy to communicate with people in different rooms of your home Selectable ring tones with adjustable volume level Retrieve messages through the base, handset or by remote access Call waiting and caller ID require additional service through your local phone company