Gaithersburg, MD (Vocus/PRWEB) February 17, 2011 A new independent survey research report on Session Internet Protocol (SIP) trunking reveals an enterprise marketplace that is poised to make significant investments in this technology - even as executives wrestle with questions about exactly how new deployments will affect current telecom operations and future initiatives.

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This document summarizes the best practices for planning, preparing, and deploying Session Initiation Protocol (SIP) trunking for public-switched-telephone-network (PSTN) access in an enterprise network. Several areas of best practices are covered, including: • Cisco® Unified Communications Manager (UCM) • Session Border Controller (SBC) The text in this white paper is based on an extract from Chapter 11 of the 2010 Cisco Press book "SIP Trunking" (ISBN: 1-58705-944-4).