Larger buttons with extra large LCD and large characters Caller announce from handset and audio boost +20dB T-coil friendly (TIA1083) 30-name and number call waiting-caller ID (activation required) 70-number advanced phonebook memory with personalized ringers 3-way conferencing, intercom and call transfer between handsets Do not disturb function Voice mail waiting light on handset with 1-touch access Handset speakerphone Last 10-number redial WiFi friendly Expandable up to 6-handsets to 1 base Copy phonebook from handsets Tri-lingual language support - English, Spanish, French