Telephone Call Waiting No Overall Depth 2 3/8 in Speakerphone No Overall Height 7 5/8 in Voicemail No Overall Width 5 5/8 in Volume Control Yes Indoor/Outdoor Usage Indoor Standards CSA 60950 FCC Part 68 UL Listed Number of Handsets 1 Number of Lines 1 Cord Length 12 in Mounting Location Wall Caller ID No Enclosure Material Stainless Steel Includes Enclosure Yes Facility Type Correctional Facility Healthcare Maximum Operating Temperature 140 Degrees F