Ideal for use on desktops and in many other locations—including lobbies, waiting rooms, warehouses, classrooms, and retail spaces—the Avaya E129 SIP Deskphone delivers basic SIP telephony capabilities, enabling enterprises to replace older analog or digital phones with advanced technology. The E129 SIP Deskphone provides frequently used features, including three-way ad hoc conferencing, hold, mute, and forward. It includes three context-sensitive soft keys, a monochrome display, and support for two concurrent calls using a Flash key.