RCA ViSYS 2 line corded speakerphone. Call waiting caller ID with 99 name/number log. Full Duplex Speakerphone. 10 Programmable one touch speed dial buttons. 99 Name/number directory. Do not disturb with variable length settings. Redial with 3 number memory. Desk or wall mountable. Trilingual display. Headset jack. Digital volume control. Hearing aid compatible.