• DSL Circuit Protection, Safe for operation in monitor and talk mode on DSL lines
• Speakerphone in Talk Mode - Battery powered
• Speaker in Talk & Monitor Mode - Battery powered
• "One touch" memory dialing - 3 locations
• Repertory memory dialing - 10 locations
• Electronic ringer indicates incoming calls
• Line polarity indication
• Line monitor feature
• Monitor Impedance >120K Ohms
• Field changeable cordset
• Impact-resistant enclosures designed to withstand the rough field conditions and use

Please note : The HD-620 model is the exact unit that it replaces. The Ideal 62-411 was actually manufactured by HDTelecom. This assures a perfect match.