ESI H DFP 48 Key Digital Feature Phone Description: With 30 programmable buttons, the ESI H DFP 48 Key phone is a powerful tool for anyone's desk. This digital feature phone has a wide range of compatibility with many ESI Phone Systems. A full list of compatible systems for the H DFP 48 Key phone can be found at the bottom of the page. The 48 Key phone features a large LCD screen for caller ID and easy menu navigation. In addition, the phone features an easy access voice mail button, a hold button, and speaker phone capabilities. This phone requires no power supply as it draws power through the line from the phone system. Each phone has a built in ESi-DEX phone book which allow you to store contacts for quick access. The ESI H 48 Key DFP phone also comes with optional TAPI (Telephony Application Programming Interface) interface. The TAPI model allows a nearby Windows PC to use telephony applications. ESI H DFP 48 Key Features: 30 Programmable Buttons LED Status Indicators LCD Screen Supports Caller ID Speakerphone (Half-Duplex) Phone Book Compatibility: Gen E Class Gen S Class Gen X Class 50 Communications Server 100 Communications Server 200 Communications Server 600 Communications Server 1000 Communications Server Includes: ESI H DFP 48 Key Digital Feature Phone Base Handset New Line Cord New Handset Cord New Paper Designation Strip and Plastic Overlay