With dual telephone lines, this system supports three-party conference. The base unit features a speakerphone for hands-free use and can hang out a Do Not Disturb sign to prevent interruptions at critical moments. This versatile phone system from AT&T offers an exciting array of features sure to please. These include caller ID, call waiting, an 18-number speed dial memory and more. It's like having your own private branch exchange without the mess and expense. If you're a heavy phone user, this might be the system for you. Conference Call Capability: Three-party conferencing Caller ID: Yes Call Waiting: Yes Speakerphone: Yes Volume Control: Yes Ringer Control: Yes Phone Directory Memory: 100 Speed Dial Memory: 18
