AT&T 4-Line DECT 6.0 Expansion Handset for SB67118 * AT&T DECT 6.0 handset offers 1 to 4-line capacity with lighted line indicators * 100-name/number phonebook directory with rapid scroll and 50 name/number caller ID history (activation required) * SB67118 system is expandable up to 10 handsets * Volume control for handset, headset and ringer * Page, intercom and call transfer between stations * Push-to-talk intercom * 3-party conferencing (for multi-line systems) * Low battery indicator * 10 speed dial and 10 intercom number locations * English/Spanish setup menu * 2.5mm headset compatible