The 3Com NBX 3102 is a full-featured business IP telephone designed for compatible 3Com NBX and VCX networked telephone systems. Its 18 programmable buttons can be configured for extensions, call appearances, lines and frequently used phone functions. A full duplex speakerphone supports hands free conversations, while the integrated display, headset connection and dual Ethernet ports provide the features needed for professional office environments. This is a system specific IP telephone. It requires compatible 3Com phone system software and is not intended to operate as a standard analog telephone.