An XO Communications White Paper by Steven Shepard, President, Shepard Communications Group, LLC

www.xo.com

Abstract
Written specifically for IT decision makers in medium to large-sized businesses, this white paper presents an overview of the Session Initiation Protocol (SIP) standard, its drivers, benefits, and barriers to implementation. The paper presents several business applications for SIP trunking and discusses the advantages of SIP as an enabler for Unified Communications. Because SIP has become the de facto industry standard for IP telephony development, the paper concludes that businesses and enterprises of all sizes will be well served if they consider SIP as part of their evolving network strategy.

Areas address include:

• Why Sip Makes Sense
• Sip Advantages and Applications
• Virtual Numbers
• Business Continuity and Disaster Recovery
• Supply Chain Support
• Unified Communications and Conferencing
• Expanded Directory Services

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