Expand Your System Up to 10 Desk Phones or Handsets- DECT 6.0- Supports 1 – 4 Lines- Extension Status Indicators- Full-Duplex Speakerphone- 6-Way Conferencing- Call Transfer- Caller ID / Call Waiting- 99 Name and Number Phonebook- 99 Name and Number Caller ID History- 10 Programmable Ringtones- Digital Receptionist- Music On Hold- Digital Answering System – Up to 200 Minutes Total Recording Time- Intercom- 30 Speed Dials- New Call / Message Indicator- Do Not Disturb- DSL Compatible- 2 Angle Stand- 4 Languages English, Spanish, French and Portuguese- Headset Compatible- Hearing Aid Compatible- Wall Mountable