Develops, markets and supports products, systems and applications for building and accessing enterprise communication networks. Offers a full range of open standard Internet Protocol-based and traditional networking products including private branch exchanges (PBXs), communications servers, server-based call managers, interface adapters, media gateways, analog, digital and VoIP telephone terminals, soft phones, wireless devices, integrated mobility solutions and system administration tools. Provides messaging, advanced software, unified communication, integrated multimedia conferencing and contact centre applications.