Contents : - VoIP Security Challenges in Enterprise and Service-Provider Networks - The Business of Voice - CALEA and Next-Generation Networks - The Advanced Softswitch Model: Sustainable Profitability for Carriers - IP Management in an IP-Centric World: A Look at Financial Impacts - Taking VoIP to the Next Level: Addressing the Needs of Incumbent Carriers - Status Quo and Outlook for Voice over IP - VoIP Deployment Considerations - Enabling VoIP Services with Effective Management Strategies - Location-Based Services: Advances and Challenges - VoIP: ISDN Dressed for Success - How to Deploy a Government VoIP Network - Where Is VoIP Today? - The Roadmap to e-Communications - VPNs: The Race Is On... - Operator-ENUM Architecture - Designing Converged Enterprise Networks for IP Telephony - The IDT Gateway: An Application-Based Class 5 Migration - Controlling Media Servers with SIP - Quantifying the Operations Benefits of Packet Trunking Technology - Understanding SIP - Single Physical Layer U-Plane Architecture (SUPA) for the Next- Generation Internet - In Packet Voice Networks (VoP), Call Quality Is More than Simple Voice Clarity - The New Converged Applications Support Model - Why Contact Center On-Demand? - TDM-Quality Voice over IP - An Introduction to Quality of Service and Class of Service in Voice Communications Networks - Acronym Guide