The Cortelco model 1210 is a single line corded Caller ID business telephone with Speakerphone. This phone is ideal for small home offices with an analog phone line connection. Some of the key features include: Mute Call Waiting Voice Mail On-hook Dialing Speed Dial Volume Control Cl Speed dial interface ports. The Cortelco 1210 is also universal to be Wall Mounted or used on your Desktop and is Headset compatible.