How can a communications protocol transform your business? Consider the impact of IP communications on the enterprise: lower costs, powerful new applications, simplified management. These benefits are accelerating the adoption of IP Telephony on a worldwide basis. Session Initiation Protocol (SIP) builds on the benefits of IP by adding intelligence to business processes and providing both users and enterprises with better control over their communications. SIP supports any form of real-time communication regardless of whether the content is voice, video, instant messaging, or a collaboration application. Additionally, SIP delivers presence: an application that lets users inform others of their status, their availability, and how they can be contacted—before a communication session even begins. Avaya uses SIP to make your people more productive, your business processes more intelligent, and your customers more satisfied by putting communications at the heart of your enterprise. The following chapters discuss how Avaya supports and exploits the advantages of SIP for enterprises. Read on to learn how SIP can transform your communications. | 
