DESC: AT&T 964 is a four-line intercom speakerphone with Caller ID, call waiting features and digital answering system. It is a full-featured telephone system, expandable into up to 12 station. Each 964 has its own private answering system with 25 minutes digital recording time. Hands-free duplex speakerphone minimizes "clipping" allowing you to speak and listen without using the handset. This telephone has 200 name/number Caller ID history.