The Avaya Aura® Application Server 5300 is an enterprise solution for pure standards-based SIP environments within the US federal government. The server delivers secure unified communications with media and signaling encryption for all communications. It is a highly scalable, carrier grade, software-based solution that operates on commercial off-the-shelf hardware. The Avaya Aura® Application Server 5300 increases employee productivity with a complete unified communications solution including telephony, instant messaging, presence, multimedia conferencing and unified messaging.