Vtech ErisBusinessSystem DECT Corded Phone (UP416) Supports 4 Analog lines for voice, Expandable up to 16 stations (1 console, 15 desk sets), Auto attendant, Day/night mode, 5-party conferencing, Line groups, Call transfer, Intercom. Compatible with UP407 Cordless Handset, Full-duplex speakerphone, Music on hold, 32-number speed dial, 10 selectable ringtones, Wall-mountable. Group mailbox (max 40 minutes of recording time), Private mailbox (max 20 minutes of recording time), Two-way call recording, Caller ID/call waiting, Cordless DECT headset (IS6100)