Avaya one-X Portal is a web-based unified communications client that consolidates access to critical voice applications in a simple consistent interface. Avaya one-X Portal is implemented and managed centrally and does not require software to be installed on user PCs. It brings together control of telephony (Avaya Aura Communication Manager), conferencing (Avaya Meeting Exchange Enterprise), and messaging (Avaya Modular Messaging with the Avaya Message Storage Server).