LDP-7248DSS

Number of buttons: 48 programmable buttons (Flexible Buttons)
Indicator lights: Triple color LEDs indicating line status (available/busy/on hold)
Call name display: Uses a paper underlay for writing internal numbers
Connectivity: Connects to a main digital telephone (e.g., LDP-7224D model)
Power supply: Powered directly from the main telephone (no separate power plug required)
System expansion: Typically, a maximum of 1-2 consoles can be connected per telephone (depending on the PBX model used)
1 year warranty