Telephone Call Waiting No Speakerphone Yes Voicemail Yes Volume Control Yes Number of Handsets 1 Number of Lines 1 Mounting Location Surface Wall Caller ID No Enclosure Material Plastic Facility Type Commercial Color Black Network Interface None Network Protocol PSTN Features Hold Redial and Mute Keys Message Waiting Lamp Cord Type Curly Includes (2) USB Charging Ports (4) Guest Service Keys Data Port Handset Phone Line Cord