12-Key Digital Feature Phone (ESI)	24-Key Digital Feature Phone (ESI)
The 12-Key Digital Feature Phone is designed for occasional users and for areas such as lobbies, warehouses and waiting rooms.	The 24-Key Digital Feature Phone is perfect for lower-traffic users who need access to system features but require less customization.
48-Key Feature Phone (ESI)	Remote IP Feature Phone (ESI)
An ESI 48-Key Feature Phone is ideal for most active phone users.	A fully featured office phone that doesn't have to be installed in an office: it's a great idea. And now, it's reality - with ESI's Remote IP Feature Phone.